ZIB

1

Digitale Medien

3-methoxytyramine: Its suitability as an indicator of synaptic dopamine release (1981)

Waldmeier, P. C. ; Lauber, J. ; Blum, W. ; [weitere]

Springer

Naunyn-Schmiedeberg's archives of pharmacology 315 (1981), S. 219-225

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ISSN: 1432-1912

Schlagwort(e): 3-Methoxytyramine ; Haloperidol ; Dopamine release ; Dopamine agonists ; Gas chromatography ; Mass Spectrometry

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The value of 3-methoxytyramine (3-MT) as an indicator of impulse-related dopamine (DA) release has been assessed in rat corpus striatum. Moreover, the turnover of 3-MT was estimated by measuring its disappearance rate after COMT inhibition. Quantitation of 3-MT and DA was performed by gas chromatography/mass spectrometry (selected ion monitoring). Haloperidol in doses between 0.05 and 3 mg/kg p.o. did not increase endogenous 3-MT levels at any time up to 24 h after its administration, whereas it dose-dependently increased homovanillic acid and 3,4-dihydroxyphenylacetic acid. However, in doses above 0.1 mg/kg p.o., it enhanced the accumulation of 3-MT in clorgyline-pretreated animals. Conversely, baclofen in doses of 2 mg/kg i.p. and above decreased endogeneous 3-MT levels, but reduced the accumulation of this amine only poorly at 20 mg/kg i.p. in clorgyline-pretreated rats. A number of dopamine agonists, apomorphine (0.5 mg/kg i.v.), dipropyl-ADTN (0.03 mg/kg i.v.), but not bromocriptine (1 mg/kg i.v.) reduced endogenous 3-MT levels 10 min after administration by approximately 50%. The DA releasing agents d-amphetamine and methylphenidate showed different effects: the former increased endogenous 3-MT greatly, whereas the latter was without effect. The difference is likely to be related to the MAO inhibitory properties of amphetamine. 3-MT disappeared rapidly after COMT inhibition with 50 mg/kg i.v. tropolone (half-life of the initial disappearance about 1 min). The curve flattened off after 5–10 min. Turnover was calculated to be about 7 nmol/g/h, which corresponds to about a third of the turnover of DA. Our results suggest that an important part of DA metabolism occurs through 3-MT and that this amine is very effectively deaminated by MAO-A, so effectively indeed that increased formation does not increase its endogeneous levels. It appears, therefore, that 3-MT is not suitable as an indicator of increased DA release. However, it seems to have some value for an assessment of lowered DA release.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00499838

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2

Digitale Medien

Occupational exposure to hexachlorocyclohexane (1981)

Angerer, J. ; Heinrich, R. ; Laudehr, H.

Springer

International archives of occupational and environmental health 48 (1981), S. 319-324

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ISSN: 1432-1246

Schlagwort(e): Chlorophenols ; Gas chromatography ; Hexachlorocyclohexane ; Metabolites

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary A sensitive and specific gas chromatographic method is described for the simultaneous determination of ten chlorinated phenols that appear in the urine of persons exposed to hexachlorocyclohexane (HCH). The phenolic compounds in the urinary samples are hydrolysed in an acidic medium and derivatised with acetic anhydride. This sample treatment permits routine application. The stationary phase (8% DC 200 on Chromosorb G AW-DMCS possesses a high separating capability for the acetic esters of the chlorophenols. The detection limits lie between 4.9 and 18.6 μg/l and allow determinations even in the environmentally interesting concentration range. The recoveries determined using aqueous standards range between 87 and 119% and the relative standard deviations are between 4.4 and 10.1%.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00378679

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3

Digitale Medien

Effects of pargyline and SKF-525A on brain N,N-dimethyltryptamine concentrations and hyperactivity in mice (1981)

Morinan, Alun ; Collier, Jonathan G.

Springer

Psychopharmacology 75 (1981), S. 179-183

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ISSN: 1432-2072

Schlagwort(e): DMT ; Gas chromatography ; Hyperactivity ; Pargyline ; SKF-525A ; Mice

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract Mice pretreated with the monoamine oxidase inhibitor pargyline showed a dose-dependent increase in hyperactivity for up to 2 h following injections of N,N-dimethyltryptamine (DMT: 0.5–8.0 mg/kg). Hyperactivity was related to a linear increase in whole brain concentrations of DMT as measured by a new sensitive gas chromatographic assay. The duration of this behaviour paralleled the concentration of DMT in the brain from 15–120 min. However, at 15 min, there was no significant difference in brain DMT concentrations between mice receiving pargyline and those given distilled water at the two dose levels of DMT studied (2.0 and 8.0 mg/kg). Pre-treatment with the microsomal enzyme inhibitor SKF-525A, alone or in combination with pargyline, had no effect on the DMT-induced behaviour or on the brain levels of DMT.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00432184

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4

Digitale Medien

Measurement of the urinary metabolites of n-hexane, cyclohexane and their isomers by gas chromatography (1981)

Perbellini, L. ; Brugnone, F. ; Silvestri, R. ; [weitere]

Springer

International archives of occupational and environmental health 48 (1981), S. 99-106

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ISSN: 1432-1246

Schlagwort(e): Urine analysis metabolites ; Gas chromatography ; Hexane ; Cyclohexane ; Biological monitoring

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary A gas chromatographic method for analyzing the urinary metabolites of n-hexane (2-hexanol, 2,5-hexanedione, 2,5-dimethylfuran and γ-valerolactone), of 2-methylpentane (2-methyl-2-pentanol), of 3-methylpentane (3-methyl-2-pentanol), and of cyclohexane (cyclohexanol) was developed. Processing of urine and the gas chromatographic conditions are described. The recovery rate of all hexane metabolites, except 2,5-dimethylfuran, ranged between 92 and 100%. The variation coefficient of metabolites determination was between 1.5 and 5%, apart from 2,5-dimethylfuran determination for which the variation coefficient was 15%. The detection limits ranged between 0.2 and 0.7 mg/1 and between 0.05 and 0.1 mg/1 when a packed or capillary column was used. Results obtained from a packed and capillary column are discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00405936

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5

Digitale Medien

Internal standardization in the head space analysis of organic solvents in blood (1981)

Radzikowska-Kintzi, Hanna ; Jakubowski, Marek

Springer

International archives of occupational and environmental health 49 (1981), S. 115-123

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ISSN: 1432-1246

Schlagwort(e): Blood analysis of solvents ; Gas chromatography ; Head space ; Toxicokinetics

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The determination of toluene, benzene, ethylbenzene and trichloro-ethylene in blood by means of a gas chromatographic head space technique is presented. Internal standards are added to the blood samples in the form of water solutions of volatile hydrocarbons in proportion 2:1. This enables application of the internal standard within the broad range of concentrations and in addition increases significantly the concentrations of investigated compounds in the gas phase of incubation vessel. Elaborated methods were applied for determinations of ethylbenzene in blood samples collected after experimental inhalation exposure and for evaluation of the rate of disappearance of benzene, toluene and trichloro-ethylene from blood after acute accidental or suicidal intoxications.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00377664

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6

Digitale Medien

Gas chromatographic separation of ethanolamines and ethylene glycols without preliminary derivatization (1981)

Boneva, S. ; Dimov, N.

Springer

Chromatographia 14 (1981), S. 601-602

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ISSN: 1612-1112

Schlagwort(e): Ethanolamines ; Ethylene glycols ; Direct separation ; Gas chromatography ; Short glass capillaries

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary An effective and rapid GC separation of ethanolamines, even in the presence of ethylene glycols, using short glass capillary columns is developed. No preliminary derivatisation of the sample is necessary. The separation is completed in 6 minutes.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262893

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7

Digitale Medien

Capillary gas chromatography of esters correlations between structure and retention index (1981)

Saura Calixto, F. ; Garcia Raso, A.

Springer

Chromatographia 14 (1981), S. 143-147

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ISSN: 1612-1112

Schlagwort(e): Capillary columns ; Gas chromatography ; Retention index ; Structure

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The retention index of twenty different homologous series of esters have been determined experimentally on polar (Carbowax 1540) and non-polar (squalane) columns. General equations to calculate retention index have been established by statistical methods. The influence of the length and inductive effect of acid and alcohol chains and the relative position of the carboxylic group are discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02314758

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8

Digitale Medien

Kaolin as support for porous layer open tubular columns (1981)

Goretti, G. ; Geraci, F. ; Russo, M. V.

Springer

Chromatographia 14 (1981), S. 285-288

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Porous layer open tubular columns ; Kaolin as support ; Column performance

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary PLOT columns have been prepared with kaolin as the liquid phase support. These columns show good efficiency with different stationary phases and good thermal stability with polar phases. The performance of columns is shown by the separation of various mixtures such as fatty acids, phenols and anilines which are of analytical importance.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259267

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9

Digitale Medien

Gas chromatographic analysis of phenylurea herbicides following catalytic hydrolysis on silica gel (1981)

Kok, A. ; Roorda, I. M. ; Frei, R. W. ; [weitere]

Springer

Chromatographia 14 (1981), S. 579-586

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Urea herbicides ; Catalytic hydrolysis

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary A method is described for the rapid catalytic hydrolysis of phenylurea herbicides on silica gel at elevated temperatures. After derivatisation of the anilines produced with heptafluorobutyric acid anhydride final analysis is done on a gas chromatograph equipped with an electroncapture detector. Detection limits are in the 1–5 picogram range. The method has successfully been applied to residue analysis of water samples at the 1 ppb level. The determination of free anilines present in water samples and the potential of various techniques to be used to discriminate between free anilines and parent herbicides are also discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262887

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10

Digitale Medien

Determination of average molecular polarizabilities of polycyclic aromatic hydrocarbons directly from retention indices (1981)

Lamparczyk, H. ; Wilczyńska, D. ; Radecki, A.

Springer

Chromatographia 14 (1981), S. 707-708

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Polycyclic aromatic hydrocarbons ; Retention index ; Average molecular polarizabilities

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary A significant correlation has been found between the retention indices of polycyclic aromatic hydrocarbons on non-polar stationary phases and the average molecular polarizabilities of the molecules separated on these phases. Equations have been derived for the determination of the average molecular polarizabilities, directly from the retention indices.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259460

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11

Digitale Medien

Factors affecting the retention of polycyclic aromatic hydrocarbons in gas chromatography (1981)

Bartle, K. D. ; Lee, M. L. ; Wise, S. A.

Springer

Chromatographia 14 (1981), S. 69-72

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Polynuclear aromatic hydrocarbons ; Retention index ; Vapour pressure

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The retention index of a planar polynuclear aromatic hydrocarbon on the GC phases OV-101, SE-52, and OV-17 is strictly related only to the boiling point, and less closely to the relative molecular mass. The very approximates relation with connectivity index ins only a consequence of the latter. On a nematic lqiuid crystal phase, a variation of activity coefficient, expressed in terms of a shape factor, also influences the retention of PAH.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02279514

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12

Digitale Medien

Analysis of trace components in gases by gas chromatography (1981)

Peichang Lu ; Junde Wang

Springer

Chromatographia 14 (1981), S. 269-276

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Detector performance ; Trace analysis ; Catalytic conversion ; Multidimensional gas chromatography

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary Relationships are derived describing how the detection limit of a chromatographic system depends on the minimum detectable limit of the detector and the chromatographic parameters such as column length, efficiency, carrier gas flow rate and the capacity factor. Performance data of detectors developed in the last 25 years at the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences are given and a few selected application examples are listed. These include trace analysis by preconcentration and by direct analysis and the utilization of multidimensional gas chromatography with two columns, two detectors, a 12-port valve, and a catalytic conversion reactor.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259264

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13

Digitale Medien

A column packing for isothermal gas chromatographic analysis of C1−C5 paraffins and monoolefins and dimethyl ether (1981)

Zatorski, L. W. ; Cichowlas, A.

Springer

Chromatographia 14 (1981), S. 277-278

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; C1−C5 Hydrocarbons ; Dimethyl ether

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary An analytical GC method was developed which uses a single packed column consisting of three packings in series prepared with the following liquid phases: dimethyl sulfolane, propylene carbonate, and silver nitrate. This system provides satisfactory resolution of mixtures of C1−C5 hydrocarbons and dimethyl ether obtained when converting methanol to gasoline. Due to the high capacity of the column it is possible to inject larger sample amounts permitting trace analysis.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259265

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14

Digitale Medien

Analysis of phthalides from umbelliferae by combined liquid-solid and gas-liquid chromatography (1981)

Gijbels, M. J. M. ; Scheffer, J. J. C. ; Svendsen, A. Baerheim

Springer

Chromatographia 14 (1981), S. 452-454

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ISSN: 1612-1112

Schlagwort(e): Phthalides ; Umbelliferae ; Liquid-solid chromatography ; Gas chromatography ; Ligustilide

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary A liquid-solid chromatographic pre-fractionation of naturally occurring phthalides has been developed. The LSC was carried out on a column of silica applying a 1–50% gradient elution of diethyl ether (containing 2% methanol) in pentane. The enrichment in the fractions led to better possibilities for a gas chromatographic separation and isolation allowing further studies by spectroscopic methods. Ligustilide may easily isomerize during GC as a result of ageing of the column.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02263532

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15

Digitale Medien

Chemically modified teflon wall-coated open tubular columns for gas chromatography (1981)

Bombick, D. ; DiNunzio, J.

Springer

Chromatographia 14 (1981), S. 19-22

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ISSN: 1612-1112

Schlagwort(e): Teflon columns ; Chemically modified teflon ; Gas chromatography ; Capillary columns

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary Wall-coated open tubular columns prepared from chemically modified teflon tubing have been developed for gas chromatography. Chemical reaction of the inner walls of teflon tubing allows bonding of an adhesive layer on which a variety of stationary phaes can be coated. Test mixtures of alkanes and alcohols were used to investigate the chromatographic properties of these columns and the stability and mixing of the adhesive and stationary phae layers. the results in dicate that mixing of the layers is negligible and that the column is stable for a long period of time.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262057

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16

Digitale Medien

Die Herstellung von Glas-Kapillarsäulen für die Gas-Chromatographie (1981)

Alexander, G.

Springer

Chromatographia 14 (1981), S. 55-66

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ISSN: 1612-1112

Schlagwort(e): Capillary columns, glass ; Gas chromatography ; Column preparation

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Zusammenfassung Kapillar-Gas-Chromatographie ist heute das sich am stärksten entwickelnde Gebiet der Gas-Chromatographie. Es gibt viele komplexe, neue Fragestellungen in der Analytik, welche den Einsatz spezieller Kapillarsäulen erfordem. Glücklicherweise gibt es aber auch eine große Zahl von Herstellungsverfahren für Kapillarsäulen, welche — noch mehr als bei der Herstellung von gepackten Säulen — eine Anpassung an die gestellten Aufgaben ermöglichen. In diesem Artikel werden die Herstellungsverfahren für Kapillarsäulen zusammengestellt und Anregungen gegeben, wie aufgaben-orientierte Säulen erreicht werden.

Notizen: Summary Glass capillary column chromatography is the most rapidly growing part of gas chromatography. There are many complex new analytical tasks and they require special capillary columns, Fortunately there is a wide range of column preparation methods available, and they make the preparation of glass capillary columns a more varied job than that of packed columns. In this paper these methods are reviewed and suggestions are given for making task-oriented columns.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262064

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17

Digitale Medien

Glass capillary SCOT columns by a single-step coating method (1981)

Chauhan, Jasbir ; Darbre, André

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 11-16

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; SCOT column ; Coating, liquid phase ; Single-step coating ; Phenols ; Phenolic acids ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A single-step coating method for the preparation of glass capillary SCOT columns is described. It is reproducible and less time-consuming than the well-known two-step coating procedures. Other methods attempted are discussed briefly. Both the flame ionization and electron capture detectors could be used in conjunction with temperature programming. The separations achieved with an “activity mixture”, phenols and phenolic acids, illustrate the resolution obtained. The columns are suitable for quantitative determinations and a comparison is made with a conventional packed column.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040104

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18

Digitale Medien

The activity of silaceous capillary columns for gas-liquid chromatography (1981)

Pretorius, Victor ; Desty, D. H.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 38-39

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Fused silica capillary column ; Activity ; Hydroxylated surfaces ; Dehydroxylated surfaces ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040111

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19

Digitale Medien

In situ cross-linking of the stationary phase in capillary columns. Part 1: Introduction and preparation of apolar columns (1981)

Sandra, P. ; Redant, G. ; Schacht, E. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 411-412

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Chemical bonding - cross-linking ; Apolar columns ; Preparation ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040810

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20

Digitale Medien

Role of injection time and septum holder in split injection of polycyclic aromatic hydrocarbons (1981)

Kolarovič, L. ; Traitler, H.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 523-524

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Split injection ; Injection time influence ; PAH ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041009

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21

Digitale Medien

An easy and reliable method for end-sealing glass capillary columns (1981)

Takayama, Y.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 533-534

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; End-sealing method for static coating ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041014

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22

Digitale Medien

Gas chromatographic analysis of furaneol (1981)

Williams, A. A. ; Mottram, D. S.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 421-422

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary columns ; Unstable flavor compound ; Comparison of fused silica, glass, and metal columns ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040815

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23

Digitale Medien

Determination of volatile carboxylic acids in animal wastes by (GC)2 of their benzyl esters (1981)

Monseur, X. ; Walravens, J. ; Dourte, P. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 49-53

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Glass capillary ; Routine analysis of C1-C6 carboxylic acids ; Animal wastes ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The C1 -C6 fatty acids present in various types of heterogeneous animal wastes were isolated by steam distillation and determined as benzyl esters by high resolution gas chromatography. Glass capillary columns, deactivated with barium carbonate and coated with UCON HB 5100, allowed the analysis of benzyl formate, acetate, propionate, isobutyrate, butyrate, isovalerate, valerate, and caproate in less than 20 minutes. Recovery tests, performed on more than 50 different samples, indicated a benzylation yield and an overall efficiency higher than 99%, with a standard deviation of 2.6% (C5) to 6.0% (C1). The absolute detection limit ranged from 0.3 picomole (caproic acid) to 1.0 picomole (formic acid).

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040202

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Fused silica capillary GC/MS coupling: A new, innovative approach (1981)

Friedli, F.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 495-499

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary column, fused silica ; Mass spectrometry ; Interface, direct coupling ; On-column injection ; Aflatoxin B1 ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A novel fused silica capillary GC/MS direct coupling is described which ensures quantitative transfer of sample from the point of injection to the ion source of a mass spectrometer without contacting any surfaces other than the column wall. This device permits GC analysis of highly labile substances. Aflatoxin B1, previously considered unassayable by GC, can now be determined by GC/MS.

Zusätzliches Material: 8 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041004

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Glass capillary gas chromatography with simultaneous flame ionization (FID) and Hall® element-specific (HECD) detection (1981)

McCarthy, L. V. ; Overton, E. B. ; Maberry, M. A. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 164-168

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Simultaneous detection with effluent splitter ; Element-specific detection ; Petroleum residues ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Two glass capillary gas chromatographic systems were equipped with inert effluent splitters which allowed simultaneous data acquisition using nonspecific and element-specific detectors. Simultaneous detection was achieved using the nonspecific flame ionization detector (FID) and the Hall® electrolytic conductivity detector (HECD) operated in either the sulfur-or the nitrogen-specific mode. Typical application of the simultaneous detection system as applied to analysis of petroleum residues is briefly described. The Hall electrolytic conductivity detector can be made element specific for halogen-, sulfur-, or nitrogen-containing compounds. Simultaneous detection enhances the information yield from a single sample injection and proves to be a powerful complementary technique when used with computerized gas chromatography/mass spectrometry.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040404

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Simultaneous gas chromatographic determination of pirimiphos-methyl and malathion residues in peanuts, peanut hulls, peanut meats, and peanut oil (1981)

Simonaitis, R. A. ; Zehner, J. M. ; Redlinger, L. M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 169-172

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Residue analysis ; Pirimiphos-methyl ; Malathion ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A gas chromatographic method developed for the simultaneous determination of residues of pirimiphos-methyl (O-[2-(dimethyl-amino)-6-methyl-4-pyrimidinyl] O,O-dimethyl phosphorothioate) and malathion (diethyl mercaptosuccinate S-ester with O,O-dimethyl phosphorodithioate), in whole peanuts, peanut hulls, peanut meats, and peanut oil gives good recoveries and has a limit of detection for pirimiphos-methyl and malathion of 0.04 ppm. Quantitative analysis for the two insecticides with electronic integration was reliable to 0.1 ppm.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040405

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On-column injection on capillary columns with conventional injectors (1981)

Rinderknecht, F. ; Wenger, B.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 295-296

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; On-column injection ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040612

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Determination of the diastereomers of vitamin K1 (1981)

Vecchi, M. ; Schmid, M. ; Walther, W. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 257-259

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Dihydro dimethyl ethers of vitamin K1 ; Separtion of diastereomers ; Characterization of source of vitamin K1 samples ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A method is described for the gas-chromatographic determination of the diastereomers of vitamin K1 (phylloquinone) in the form of their dihydro dimethyl ethers. The reported method of derivatization and chromatographic analysis in conjunction with optical rotation measurements are useful approaches for characterization of vitamin K1 samples with respect to their origin.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040602

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Rapid on-line analysis of low molecular weight hydrocarbons using glass capillary gas chromatography (1981)

Glajch, J. L. ; Schunn, R. A.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 333-336

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Rapid analysis ; On-line analysis ; Low molecular weight hydrocarbons ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Rapid analysis is important for on-line chromatography. Gaseous or vaporized samples have been injected via heated gas sampling valves of less than 500 μl dead volume. The critical sampling and split problems could be solved by temperature programming. The general analysis described could be successfully used inter alia in scouting reactions.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040705

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Dynamic headspace analysis of solid waste materialsResearch sponsored by the Office of Health and Environmental Research, U. S. Department of Energy under contract W-7405-eng-26 with the Union Carbide Corporation. (1981)

Brazell, R. S. ; Maskarinec, M. P.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 404-405

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Details

ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Dynamic headspace analysis ; Solid waste ; Fused silica capillary columns ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A dynamic headspace stripping technique for the extraction of volatile organic compounds has been applied to a variety of solid and semisolid waste materials. A simple glass apparatus accommodates a wide range of sample sizes and allows for the volatiles to be stripped at elevated temperatures. Concentration on Tenax, followed by thermal desorption and analysis by fused silica capillary gas chromatography provides detailed information on the volatile content of waste samples of widely differing matrix composition.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040807

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Use of molar heats of solution in squalane for identification of olefins (1981)

Korol, A. N.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 527-529

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Thermodynamics ; Identification of analytes ; Olefins ; Squalane ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041011

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Analysis of light hydrocarbons C1-C5 with Porous Layer Open Tubular fused silica columns of aluminum oxide. Part 1: The column (1981)

de Nijs, R. C. M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 612-615

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Porous layer open tubular fused silica columns ; Aluminum oxide ; C1-C5 hydrocarbons ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A method is described for the preparation of a Porous Layer Open Tubular (PLOT) fused silica column coated with submicron particles of aluminum oxide for the analysis of light hydrocarbons. The column is thermally stable and provides reproducible analytical data over a long period of time. The column can be operated at temperatures easily controlled by commercially available gas chromatographic apparatus. 1,3-Butadiene is retarded much more than its principal impurities: thus the polarity of aluminum oxide is extremely useful for butadiene analysis because none of the contaminants is obscured by the butadiene peak. The analysis of the 16 most common C1-C4 hydrocarbons is achieved within 5 min at 60°C with helium as the carrier gas. Conditioning of the carrier gas with water vapor from CuSO4.5H2O to decrease the activity of the aluminum oxide is described. Some applications of a 30 m × 0.32 mm aluminum oxide PLOT column are given.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041203

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Focused cryogenic trapping for dynamic headspace and pyrolytic analysis of polymers on a fused silica capillary column (1981)

Moncur, James G. ; Sharp, Terry E. ; Byrd, Edward R.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 603-611

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Gas chromatograph/mass spectrometer/data system ; Dynamic headspace analysis ; Focused cryogenic trapping ; Pyrolysis ; Polymers ; Adhesives ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Focused cryogenic trapping has been used to maximize the high resolution capabilities of fused silica capillary columns during dynamic headspace and pyrolytic polymer analyses. Mass spectrometric detection with data system recording/processing provide sensitive, selective, and rapid results. The techniques described herein demonstrate the power of both dynamic headspace and pyrolytic analyses for troubleshooting applications with complex industrial polymer products.

Zusätzliches Material: 11 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041202

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Direct determination of pollutants in air by gas chromatograph helium ionization detection (1981)

Brazell, R. S. ; Andrawes, F. F. ; Gibson, E. K.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 188-190

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Helium ionization detector (HID) ; Vinyl chloride ; Sulfur gases ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040413

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Separation of pesticides by capillary gas chromatography. Part 2: Organophosphorus insecticides (1981)

Wolf, M. ; Deleu, R. ; Copin, A.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 346-347

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; WCOT-glass capillary ; Organophosphorus insecticides ; Pesticides ; Metabolites ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: This article considers the separation of 23 organophosphorus insecticides to which two metabolites have been added. The high resolution of the column permits detection of the Z and E isomers of three of these insecticides.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040708

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36

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Rapid boiling point assay of tar from coal gasification by gas chromatography (1981)

Gangwal, S. K.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 580-581

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Coal gasification tar ; Boiling point distribution ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041108

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Qualitative evaluation of aromatic herbs by direct head space (GC)2 analysis. Methodology and some preliminary applications (1981)

Gabri, G. ; Chialva, F.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 215-217

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary columns ; Direct method for flavor evaluation ; Aromatic herbs analysis ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A simple, quick method is described for GC head space evaluation of herbs and drugs. The proposed procedure consists of milling a weighed sample of a certain herb in a glass device like a Braun MXK coffee grinder, modified in such a way that a special gas-tight valve allows the direct sampling of the vapors. Glass capillary columns are used to analyze the head space volatiles. Some preliminary applications of the method are given.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040504

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A quick and clean technique for sealing capillary columns using the static coating method (1981)

Lochmüller, C. H. ; Fisk, J. D.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 232-232

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Static coating ; Sealing method ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040508

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Glass capillary columns for separation of free organic acids (1981)

Hřivnáč, Milan ; Sýkora-Čechová, Lenka ; Müller-Aerne, Monica

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 323-327

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Deactivation by colloidal aqueous silica plus BTPPC plus Carbowax 1000 ; Use for adsorption-sensitive solutes fails with basic compounds ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Glass capillary columns have been prepared without acidic additive in the stationary phase, from which free organic acids elute as sharp and symmetrical peaks. The required surface in the borosilicate glass capillary was generated by a combination of leaching with aqueous HCl and deposition of colloidal silica particles; it can be coated with stationary phases have a broad range of polarity. Aqueous samples containing free organic acids can also be analyzed in such columns in an isothermal mode.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040703

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Deactivation of fused silica capillary columns with pyrocarbon (1981)

Pretorius, Victor ; Desty, D. H.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 122-123

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Fused silica ; Capillary columns ; Deactivation ; Pyrocarbon ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040306

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Simultaneous analysis of all five organic priority pollutant fractions (1981)

Trussell, A. R. ; Moncur, J. G. ; Lieu, Fong-Yi ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 156-163

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Priority pollutants ; Volatile organics ; Extractable organics ; Pesticides ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Acrolein, acrylonitrile, volatile organics, base/neutral extractables, acid extractables, and pesticide fraction organics are analyzed in a single chromatographic run. This is accomplished by injecting the extractable organics, then applying a cryogenic focus to the front of the column, and desorbing the volatile components. The column utilized for this procedure is a fused silica open tubular (FSOT) column coated with the liquid phase SE-54. Minimum detection limits of this procedure by electron impact GC/MS are shown to be≤ 1 μg/liter in tests conducted on actual water samples.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040403

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Novel method of connecting a fused silica capillary column to a glass injector (1981)

Mitchum, R. K. ; Korfmacher, W. A. ; Moler, G. F.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 180-180

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary ; Injector to column connection ; TCDD ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040408

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Glass capillary T-connections for high resolution GC (1981)

Hudson, Joseph R. ; Morgan, Stephen L.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 186-187

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Effluent splitter, preparation of ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040412

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44

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Peroxide-initiated in situ curing of some silicone gums for capillary columns (1981)

Blomberg, L. ; Buijten, J. ; Markides, K. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 578-579

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Crosslinked silicones ; Peroxide-initiated vulcanization ; Trifluoropylsilicone ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041107

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Cuprous chloride-modified columns for gas-liquid chromatography of olefins [1] (1981)

Subbarao, K. V. ; Damodaran, N. P. ; Dev, Sukh

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 583-584

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; 10% CuCl in stationary phase greatly improves resolution of high-boiling olefins (up to 190°C) ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041110

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On-column injection with open tubular columns (1981)

Knauss, K. ; Fullemann, J. ; Turner, M. P.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 641-643

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary column ; On-column injection ; Discrimination ; Criteria given for precise sampling ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041207

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Obtaining quantitative data for PNAs with capillary column gas chromatography using split and splitless injectionWork supported by the U. S. Department of Energy Under Contract DE-AC06-76RLO 1830. (1981)

Springer, D. L. ; Phelps, D. W. ; Schirmer, R. E.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 638-641

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Split injection ; Splitless injection ; Polynuclear aromatic hydrocarbons, quantitation ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041206

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Glass wool in the inserts of split injectors for capillary GC? (1981)

Grob, K. ; Neukom, H. P. ; Hilling, P.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 203-208

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary column ; Split injection, vaporizing ; Glass wool as evaporation aid in split injector ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: It has been reported that glass wool packed tightly into the glass liner of a vaporizing injector used in the splitting mode considerably reduces the standard deviation of the results obtained, because of improved evaporation of the sample prior to reaching the split point at the capillary column entrance. This finding could not be reproduced on using the same sample composition as reported in the literature, i.e. methanol/2-ethyl-1-hexanol (1:1).The standard deviations obtained were between 3 and 10% (depending on the conditions selected) and were not influenced significantly by the introduction of glass wool.The peak area ratio (methanol/2-ethyl-1-hexanol) was found to depend on a number of parameters, such as: injector temperature; glass liner internal diameter; syringe handling technique; the relative position of the syringe needle exit and capillary column entrance; the sample volume injected; and the packing of the glass liner. Generally, the area ratio deviated further from the correct one (determined by cold on-column sampling) when the glass liner was packed with glass wool.On the basis of the results, it is speculated that either a complete evaporation of the sample should be achieved (which appears to be impossible under the conditions we used) or, alternatively, the sample should be given the least possible opportunity to evaporate, thus allowing it to enter the column in the form of droplets. The results were worse in terms of precision and accuracy the greater the partition of sample components between the liquid (droplet) and vapor phase. It is concluded that the use of evaporation aids such as glass wool cannot be generally recommended.

Zusätzliches Material: 5 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040502

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Digitale Medien

Separation, identification, and quantitation of pyrolysis gasolines (1981)

Herrera, M. ; Murgia, E. ; de Hazos, M. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 297-299

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Quantitative mulicomponent analysis ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040613

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50

Digitale Medien

Simple GC/FID trace determination of toluene in silicone fluids (1981)

Dudding, Gerald F. ; Sorensen, Gerald T.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 647-648

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Direct injection of silicone fluids method of choice for determining trace organic contaminants ; ≥ 1 ppm toluene determined ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041209

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Gas chromatographic separation of triglycerides according to their degree of unsaturation on glass capillary columnsHT wishes to dedicate this publication to Prof. K. Kratzl, University of Vienna, Austria, on the occasion of his 65th birthday. (1981)

Traitler, Helmut ; Prévǒt, And RÉ

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 109-114

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; On-column injection ; Triglycerides ; Separation according to degree of unsaturation ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Triglycerides are separated according to their molecular weight and their degree of unsaturation on glass capillary columns by use of the on-column injection technique. The columns employed are silylated SE-30 columns of 4.5, 8, and 10m length with a film thickness of ca. 0.15 μm. The paper gives several examples of chromatograms of natural and hydrogenated triglycerides as well as of mixtures of pure, known triglycerides before and after interesterification.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040304

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Digitale Medien

Trace analysis of fungicides in grape juice and wine using glass capillary gas chromatography (1981)

Spitzer, T. ; Nickless, G.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 151-155

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; XAD-2 resin ; Fungicide residues, determination in wine and grape juice ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The fungicides Bupirimate, Fenarimol, and Vinclozolin were sprayed on Vines. The fruits were harvested 8 and 21 days after the final application and processed to juice and wine. The fungicide residues were determined by filtration of the samples throug XAD-2 after pH adjustment, elution with methylene chloride, and glass capillary gas chromatography with SE-30 as stationary phase. Residue values of the three compounds were reported before and after fermentation. The precision of the analytical method was established by spiking portuguese white wine and spanish grape juice with the three fungicides and Triadimefon. The recoveries were in the range 80%-100%, except for Vinclozolin.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040402

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53

Digitale Medien

Deactivation of diatomaceous earth using pyrocarbon (1981)

Pretorius, V. ; Desty, D. H.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 181-182

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Diatomaceous earth ; Deactivation ; Pyrocarbon ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040409

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54

Digitale Medien

A simple and safe sealing technique for static coating (1981)

Schäfers, F.-I. ; Herrmann, K.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 183-183

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; End-sealing technique for static coating ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040410

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Digitale Medien

Separation of three tetrachlorodibenzofuran isomers via fused silica GC combined with API-MS (1981)

Korfmacher, W. A. ; Mitchum, R. K.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 294-295

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; 2,3,7,8-TCDD ; Tetrachlorodibenzofurans ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040611

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Digitale Medien

A general framework for the measurement of band broadening properties of GC capillary columns (1981)

Smuts, T. W. ; Buys, T. S. ; du Toit, T. G. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 385-392

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary columns ; Theory of band broadening ; Regression methods in column evaluation abt concept ; Possible aid in assessing coating efficiency ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: In the approach to the developement of a practical procedure for the evaluation of band broadening properties of gas capillary columns, the expression for the variance of a solute band is cast in a dimensionless form. This expression supplies the basis for a valid bench mark for column evaluation. Experimental results demonstrate the applicability of the method.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040804

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Digitale Medien

Construction of an efficient fused silica capillary column effluent splitter for gas chromatography (1981)

Later, Douglas W. ; Wright, Bob W. ; Lee, Milton L.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 406-408

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary ; Effluent splitter, fused silica ; Efficient ; Inert ; Minimum dead volume ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040808

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Glass capillary column chromatography of mixed derivatives of primary prostaglandins, 6-keto prostaglandin F1α and thromboxane B2 (1981)

Roselló, J. ; Gelpi, E. ; Rigaud, M. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 437-443

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Gas chromatographic profiles ; n-Butylboronates ; Alkyl-oximes ; Primary prostaglandins ; 6-Keto prostaglandin F1α ; Thromboxane B2 ; Isomers of prostaglandin F1α ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: This work describes the use of glass capillary columns (GCC) in the rapid concurrent analysis of primary prostaglandins (PGs) (e. g. PGE2, PGE2, PGF2α) and other functionally significant metabolites of arachidonic acid (AA) such as TXB2 and 6-keto PGF1α. The use of a new multistep mixed derivatization approach that generates the methyl esters of n-butylboronate, pentafluorobenzyloxime, trimethylsilyl ether derivatives of these compounds remarkably simplifies the GC profiling of the three main pathways of AA metabolism (PGs, thromboxane, and prostacyclin). Furthermore, isomeric species giving very similar or identical mass spectral patterns can be easily identified by their relative retention times on high efficiency capillary columns.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040903

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Digitale Medien

Application of multidimensional switching to the analysis of volatiles (1981)

Sevcik, J.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 86-89

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Packed columns ; Multidimensional switching, MDSS ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A multidimensional switching system with two packed columns has been used for the analysis of volatiles. Use of a high-boiling solvent and the backflush mode permitted total resolution of the mixture discussed in a short analysis time.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040210

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60

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A study of the effects of temperature and pressure on the retention time in series-coupled columns under conditions of constant mass flow rate (1981)

Buys, T. S. ; Smuts, T. W.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 102-108

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Series-coupled columns with different stationary phases ; Independent temperature control of columns ; Constant mass flow rate ; Retention time expressions ; Theory ; Selectivity control ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The technique of controlling chromatographic selectivity by the adjustment of column temperatures in systems of series-coupled columns is investigated by means of a general model incorporating the effects of temperature and mobile phase compressibility. In a previous article the performance of series-coupled columns was investigated under conditions of constant overall pressure drop. The present paper, on the other hand, considers systems in which a constant mass flow rate is maintained at all temperatures. The expressions derived for the effective partition coefficient and the retention time are compared with those of the previous paper. The numerical results for two-column systems exhibit the same major trends as those for constant pressure drop. It is shown that the effective partition coefficient is slightly dependent on the mass flow rate.

Zusätzliches Material: 12 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040303

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GC resolution of various D, L-amino acid derivatives on a chirasil-pval capillary column (1981)

Abe, I. ; Izumi, K. ; Kuramoto, S. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 549-552

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary column ; Optically active stationary phase ; Amino acids, enantiomeric derivatives ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: An enantiomeric mixture of amino acids is derivatized to give the respective N(O)-perfluoroacyl alkyl esters which can be resolved directly by gas chromatography on a Chirasil-Val capillary column. The retention times, resolution numbers, and elution order are reported.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041102

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Gas-liquid chromatography of amino acids: Columns and methodology as a basis for routine amino acid analysis using glass capillary gas chromatography (1981)

Moodie, I. M. ; Burger, J.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 218-223

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Column preparation ; “Split” vs. “on-column” injection ; Amino acid analysis, quantitative 10 ng level ; Average relative standard deviation 1% ; Fish muscle protein analysis ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A carefully Standardized technique is described for the preparation of glass capillary columns which can be used successfully for routine quantitative amino acid analysis. Comparison is made between two different modes of sample injection. Preliminary quantitative results from “split” injection and “on-column” injection techniques are evaluated statistically and it is concluded that the “on-column” system is a prerequisite for quantitative amino acid analysis by glass capillary gas chromatography. An analysis of fish muscle protein hydrolyzate illustrates an application of this technique and results are compared with those from a packed column analysis.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040505

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Fused silica capillary GC separation of alkene halohydrins (1981)

Geigert, J. ; Wadsworth, J. ; Moreland, M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 184-185

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Alkene halohydrins ; Positional isomers ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The use of a fused silica capillary column for the gas chromatographic analysis of alkene halohydrin positional isomers is described. This method is illustrated with the complete resolution of the positional isomers for propylene bromohydrin, propylene iodohydrin, and allyl bromide bromohydrin. Comparison with the resolution obtained on a packed column is also provided.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040411

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Detection of PAH of molecular weight between 300 and 402 in airborne particulate matter by fused silica capillary GC and GC/MS (1981)

Romanowski, T. ; Funcke, W. ; König, J. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 209-214

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Capillary GC/MS ; PAH, M.W. 300-402 ; Airborne particulate matter ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Gas chromatography (GC), low-voltage mass spectrometry (LV MS), and gas chromatography/mass spectrometry (GC/MS) have been used for detecting polycyclic aromatic hydrocarbons (PAH) of molecular weight between 300 and 402 in airborne particulate matter. Nearly 200 high molecular PAH separated by fused silica capillary columns could be characterized by their El mass spectra. The lack of reference substances precluded further structure elucidation.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040503

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Effect of film thickness and supercooling on the performance of cholesteryl cinnamate liquid crystal capillary columnsMention of a commercial or proprietary product in this paper does not constitute an endorsement of that product by the USDA. (1981)

Heath, R. R. ; Jordan, J. R. ; Sonnet, P. E.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 328-332

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Cholesteric liquid crystal phase ; Film thickness and temperature study ; Separation of geometrical isomers ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Improved separations of the isomers of olefinic aliphatic insect pheromones were obtained on cholesteryl cinnamate glass capillary columns by operating in the supercooled temperature range of the liquid crystal. Capillary columns were prepared with varying film thickness of the stationary phase; choice of the correct film thickness ensured optimum retention for a wide range of compounds within the most effective temperature range of the liquid crystal. The deactivation procedures described made the liquid crystal columns suitable for separation of the geometric isomers of polar and nonpolar compounds.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040704

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Analysis of N-methylcarbamate insecticides and related compounds by capillary gas chromatography (1981)

Wehner, T. A. ; Seiber, J. N.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 348-350

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Use for thermolabile, nonderivatized N-methylcarbamates tested ; Faster, better separation, higher sensitivity than with HPLC methods ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040709

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Transducer for monitoring solvent plugs in capillary column preparation (1981)

Hembree, J. A. ; McCracken, M. S.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 409-410

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Micro-HPLC ; Capillary columns, preparation ; Optical monitor ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040809

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Thermostable persilylated polar glass capillary columns by the ammonia-etching method (1981)

Traitler, H. ; Prévôt, A.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 433-436

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Persilylation ; Polar phases ; Ammonia etching ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Static ammonia etching has been used to effect regular surface roughening of glass capillaries. Following such treatment, polar phases could be coated after persilylation with varioussilylation agents such as hexamethyl-, tetramethyldiphenyl-, and tetra- phenyldimethyldisilazane, respectively. This method produces columns of high thermostability, which is limited only by the maximum applicable temperature for the phase itself.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040902

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Study of the reaction of ethyl- and methylmercury chloride with diphenylmercury by GC-MS (1981)

Touabet, Aziza ; Abdeddaim, Khelifa ; Guermouche, Moulay-Hassane

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 525-526

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Mass spectrometry ; Reactions of organomercurials interpreted ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041010

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70

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Gas chromatographic resolution of carbohydrate enantiomers. A new chiral phase for pentoses (1981)

Benecke, I. ; Schmidt, E. ; König, W. A.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 553-556

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass ; Carbohydrate enantiomer separation ; New chiral stationary phases ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: New chiral polymers have been prepared by conversion of cyano groups of polysiloxanes XE-60 and OV-225 into carboxylic groups and subsequent coupling to give the respective S-valine-R-α-phenyl-ethyl amide. In contrast to the corresponding stationary phases with S-α-phenylethyl amide groups, which have been used for the resoultion of trifluoroacetylated hexose derivatives, the new phase show high enantioselectivity for pentose and 6-deoxyhexose derivatives.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041103

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71

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A non-vaporizing on-column injector for wide-bore capillary gas chromatography which prevents sample discrimination (1981)

Badings, H. T. ; De Jong, C. ; Wassink, J. G.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 644-646

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Wide-bore capillary columns ; On-column injector ; Prevention of sample discrimination ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240041208

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72

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Simultaneous detection of total and halogenated hydrocarbons in complex environmental samples (1981)

Dahlgran, James R.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 393-397

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, fused silica ; Simultaneous detection ; Splitting capillary effluent ; Detection limit of 1 ppm Archlor 1254 ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A state-of-the-art gas chromatographic system for automatic simultaneous detection of halogenated and normal hydrocarbons has been developed, which consists of a standard Hewlett-Packard 5880 with a fused silica capillary column, whose effluent is split between the standard flame ionization detector and a Tracor Hall electroconductivity detector. The system provedes excellent capillary chromatography results and high sensitivity for halogenated compounds (a detection limit of 1 ppm Archlor 1254 in fuel oil). Reliability has been provides in the daily analysis of complex environmental samples.Emergency response cleanup and the containment of hazardous chemical spills and chemical dump sites forces one to deal with samples that are very complex. The contain large numbers of naturally occurring organic compounds and varying types of organic pollutants. Capillary chromatographic techniques of gas chromatographic and gas chromatographic/mass spectrometric analyses are necessary to achieve the resolution required for the analysis of these samples.

Zusätzliches Material: 10 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040805

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73

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The effect of the temperature dependence of mobile phase viscosity on the retention time in series-coupled gas chromatographic columns (1981)

Buys, T. S. ; Smuts, T. W.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 317-322

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Series-coupled columns with different stationary phases ; Independent temperature control of columns ; Constant mass flow and constant pressure drop ; Temperature dependence of viscosity coefficient ; Retention time expressions ; Theory ; Selectivity control ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A previously established model of a system of series-coupled columns, incorporating the effects of temperature and mobile phase compressibility, is generalized to take the temperature dependence of the mobile phase viscosity coefficient into account. Expressions are reported for the linear flow velocity, the effective partition coefficient, and the retention time for both the case of constant mass flow rate and that of constant overall pressure drop. Numerical results indicate that the temperature dependence of the viscosity coefficient affects the retention time and pressure drop while the effective mass distribution coefficient remains essentially unchanged.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040702

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74

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Gas chromatography in glass and fused silica capillary columns: Deactivation of the inner surface using silicon films (1981)

Pretorius, Victor ; du Toit, J. W. ; Purnell, J. H.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 344-345

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Capillary, glass/fused silica ; Gas phase deactivation reaction ; Readily adjustable thickness of silicon layers for deactivation ; Wettability for any known stationary phase ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040707

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75

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GC behaviour of symmetrical n-dialkyl sulphides under isothermal and temperature programming conditions (1981)

Zotov, L. N. ; Golovkin, G. V. ; Golovnya, R. V.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 6-10

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Retention index calculation by correlation techniques ; Use of n-dialkyl sulphides as standards ; Use of selective detectors ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Retention indices were determined for a homologous series of n-dialkyl sulphides on three stationary phases (SE-30, OV-17 and XE-60) under isothermal and linear temperature programming conditions. Under these two different GC conditions, equations were derived for each of the three stationary phases which showed the dependence of retention index on the number of carbon atoms and the boiling points for a homologous series of n-dialkyl sulphides. The equation for the correlation isothermal retention index was shown to be applicable to the identification of n-dialkyl sulphides using linear temperature programming. It was found that the GC behaviour of n-dialkyl sulphides makes these compounds suitable for use as a standard series instead of n-alkanes for the calculation of retention indices in GC analysis in which detectors insensitive to n-alkanes are employed. The use of the homologous series of n-dialkyl sulphides for the calculation of sulphide retention indices can be great practical importance in the microanalysis of natural compounds. We have used this method successfully in the analysis of pesticides containing S-atoms.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040103

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76

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Some comments on the barium carbonate (Grob) procedure for treating glass capillary columns for gas-liquid chromatography (1981)

Pretorius, Victor ; Du Toit, J. W. ; Davidtz, J. C.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 4 (1981), S. 79-80

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ISSN: 0935-6304

Schlagwort(e): Gas chromatography ; Glass capillary columns ; Barium carbonate ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240040207

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77

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The obstruction factor γ in gas chromatography (1981)

Thumneum, P. ; Hawkes, S.

Springer

Chromatographia 14 (1981), S. 576-578

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Tortuosity factor

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The relationship between the obstructive factor γ and velocity was restudied. The dependence of the obstructive factor on velocity was verified. The effects of diffusion coefficient and particle-to-column diameter ratio on the obstructive factor-velocity relationship were investigated. The results are consistent with Hawkes' hypothesis that values of γ at low velocities are averages over tightly packed and loosely packed domains while at high velocities they are weighted in favour of the loosely packed domains where there is more flow.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262886

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78

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Blending bulk dissolution and gas-liquid-adsorption with the mixing of two liquid stationary phases to increase selectivity (1981)

Lafosse, M.

Springer

Chromatographia 14 (1981), S. 648-652

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Gas-liquid adsorption ; Bulk solution ; Mixed stationary phases

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary It is shown that the blending of some retention effects can make the resolution of complex mixtures on short classical columns as effective as on capillary columns.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02291105

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79

Digitale Medien

Separation of xylidine isomers on heteroaromatic compounds by gas-liquid chromatography (1981)

Ono, A.

Springer

Chromatographia 14 (1981), S. 39-40

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ISSN: 1612-1112

Schlagwort(e): Xylidine isomers ; Heteroaromatic liquid phases ; Gas chromatography

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary Nicotinic acid and 1H-benzotriazole appreciably resolved all the xylidine (dimethylaniline) isomers, while benzimidazole, nicotinamide and phthalimide can also separate all the isomers except 2,4- and 2,3-xylidines. The analyses were carried out on supports which were not treated with an alkali.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262060

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80

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Analysis of complex industrial samples by gas chromatography; a report on selected past activities (1981)

Lu, Peichang ; Li, Xiuzhen

Springer

Chromatographia 14 (1981), S. 203-211

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Quantitative analysis ; Copper oxide converter ; Inorganic gas analysis ; Determination of fluorine and oxygen ; Hydrocarbon analysis ; Wine analysis

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary A review of past activities concerning selected industrial analytical problems is given. This includes the following question: preparation of pure gas mixtures to be used for calibration, catalytic conversion of ester and pyridin samples to carbon dioxide and a one-point calibration method using peak heights, both for quantitative analysis, analysis of gas mixtures containing fluorine and inorganic fluorine compounds and the determination of the oxygen and fluorine content of the sample, separation and identification of hydrocarbons in shale oil and petroleum fraction samples, and analysis of wine.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02260153

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81

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Mixed phases of Superox 20M and OV-1 in fused silica and glass capillary gas chromatography (1981)

Sandra, P. ; Roelenbosch, M.

Springer

Chromatographia 14 (1981), S. 345-350

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Silica capillaries ; Glass capillaries ; Mixed gum phases ; Polarity and selectivity

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary Mixed phases of Superox 20M and OV-1 can be coated homogeneously on the untreated wall of fused silica capillary columns. Excellent columns with regard to efficiency, inertness and thermal stability can be obtained. (CE〉95% and MAOT≥250°). The polarity and selectivity were ascertained with Rohrschneider-Reynolds probes and a capillary polarity test mixture. The analysis of an essential oil mixture illustrates the possibilities of mixed phases in practical capillary GC.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259233

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82

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Comments on column characterization: A sulfur column (1981)

Dowell, F. ; Stewart, G. H.

Springer

Chromatographia 14 (1981), S. 421-424

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Liquid sulfur ; McReynolds' constants

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The McReynolds' constants for liquid sulfur as a stationary phase in gas-liquid chromatography (GLC) are presented. A simple graphical method of pattern analysis is used to indicate the uniqueness of the sulfur column as compared with other stationary liquid phases characterized by McReynolds. The limitations of using a single factor (as polarity) for the basis for the selection of GLC columns is discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262878

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83

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Novel applications for headspace gas chromatography (1981)

Dong, M. W.

Springer

Chromatographia 14 (1981), S. 447-451

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ISSN: 1612-1112

Schlagwort(e): Headspace analysis ; Gas chromatography ; Residual analysis of polyethylene terephthalate ; Acetylene reduction assay ; Ethylene evolution in germinating seed ; Acetaldehyde generation in polyester resin

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary New application areas for headspace gas chromatography in agricultural and polymer degradation research are described. Specific examples are drawn from the various forms of headspace analysis with emphasis on the automated static equilibrium method.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02263531

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84

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Headspace gas chromatographic determination of aromatic hydrocarbons in natural and waste water (1981)

Stolyarov, B. V.

Springer

Chromatographia 14 (1981), S. 699-703

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Headspace analysis ; Aromatic hydrocarbons ; Water analyses

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The possibilities of using headspace analysis of aromatic hydrocarbon traces in aqueous solutions with changing values of the partition coefficients are discussed. A variant of headspace analysis of the simplest aromatic hydrocarbon in natural and waste water is described. It involves two-step gaseous extraction of a sample in vessels of varying volume before and after the equilibrium phase is replaced with a pure gas (air or nitrogen). This method permits to analyse 5–50 ml water samples with benzene and toluene contents varying from the ppb to the ppm range within an error not exceeding 155. The analysis time is about 1.5 h. The presence of non-volatile organic or mineral substances does not influence the determination. This method is unsuitable to heterogeneous systems (aqueous oil emulsions): before carrying out the analysis for the hydrocarbon content these systems have to be homogenized first.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259458

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85

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Factors affecting reproducibility in the manufacture of glass and siliceous glass open tubular (capillary) columns (1981)

Jennings, W. G. ; Wohleb, R. H. ; Jenkins, R. G.

Springer

Chromatographia 14 (1981), S. 484-487

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Open tubular (capillary) columns ; Glass columns ; Fused-silica columns ; Column testing

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary Column characteristics affecting the chromatographic behavior of glass and siliceous glass (“fused silica”) capillary columns include the dimensional uniformity of the column, the physical and chemical characteristics of the column wall and the characteristics of the liquid phase. In the case of the coated column the uniformity and thickness of the liquid phase film are the most important criteria affecting column reproducibility. The paper discusses these factors and their influence on column performance.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02263539

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86

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The determination of phenol in urine by enzymatic hydrolysis/headspace gas chromatography (1981)

Adlard, E. R. ; Milne, C. B. ; Tindle, P. E.

Springer

Chromatographia 14 (1981), S. 507-509

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Headspace ; Phenol ; Urine ; Enzymatic hydrolysis

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary A new method has been developed for the determination of phenol in urine in which the phenol conjugates are hydrolysed enzymatically and the liberated phenol is analysed by headspace chromatography. The results compare favourably with those obtained by the method of van Haaften and Sie in which acid hydrolysis is carried out in a heated GC precolumn. The enzymatic hydrolysis headspace technique appears to be very reliable and does not suffer from the disadvantages of precolumn acid hydrolysis.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02265629

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87

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Gas chromatographic analysis of water phenolic pollutants using acid-washed graphitised carbon black (1981)

Corcia, A. ; Samperi, R. ; Sebastiani, E. ; [weitere]

Springer

Chromatographia 14 (1981), S. 86-88

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Graphitised carbon black ; Phenols ; Water pllutants

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary The fractionation of eleven phenols which may be contaminants in drinking water has been accomplished by using acid-washed graphitised carbon black modified with trimesic acid and PEG 20 M.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02279517

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88

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Trennung, Identifizierung und Bestimmung von Treibgasen und Lösungsmitteln in Aerosol-Produkten mittels Gas-Chromatographie (1981)

König, H. ; Hermes, M.

Springer

Chromatographia 14 (1981), S. 351-354

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Kováts retention indices ; Propellants ; Solvents ; Aerosol packs

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Summary A gas chromatographic method is described by which a nearly complete separation of all commonly used propellants and solvents and their identification and determination can be achieved in one step. The separation is by simple adsorption chromatography on columns packed with Porapak-T with a temperature program 100–180°C at 10°C/min. Kováts' retention indices have been calculated for isothermal conditions at 150°C respectively 100°C for the propellants, at 180°C for the solvents. An exact identification of the propellants and solvents by means of the Kováts' indices is practicable even in complex mixtures.

Notizen: Zusammenfassung Es wird eine gas-chromatographische Methode angegeben, welche eine fast vollständige Auftrennung aller handelsüblichen Aerosol-Treibgase und Lösungsmittel und ihre Identifizierung und Bestimmung in einem Schritt gestatet. Die Trennung erfolgt durch reine Adsorptions-Chromatographie and Porapak T-Säulen bei 100–180°C mit einer Temperaturate von 10°C/min. Zur Bestimmung der Retentionsindices nach Kovats wurden die Treibgase isotherm bei 150°C bzw. 100°C, die Lösungsmittel bei 180°C aufgetrennt. Anhand der Kovats-Indices ist eine eindeutige Identifizierung der Treibgase und Lösungsmittel selbst in vielfältigen Gemischen möglich.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02259234

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89

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Characterization of glass, quartz, and fused silica capillary column surfaces from contact-angle measurements (1981)

Bartle, K. D. ; Wright, B. W. ; Lee, M. L.

Springer

Chromatographia 14 (1981), S. 387-397

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ISSN: 1612-1112

Schlagwort(e): Gas chromatography ; Capillary columns ; Fused silica ; Contact angle ; Wettability

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Summary This paper describes the systematic characterization of glass and the newly introduced fused silica and quartz capillary columns from surface wettability measurements. Common gas chromatographic stationary phases were used in capillary-rise measurements at temperatures up to 300°C. By construction of Zisman plots and using the Cassie equation, the relative surface concentrations of wettable and non-wettable groups were determined. By application of the Fowkes equation, the dispersion force component of the surface energy was investigated. The influence of various surface treatments such as leaching, silylation, and polymeric film formation are discussed. Wettability measurements were also used to evaluate the thermostability of various treated surfaces and to compare the surface properties of glass, quartz, and fused silica. The wettability of the surfaces with selected stationary phases as a function of temperature is also discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02262872

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90

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„Spinstabilisierung“ durch Komplexierung; ESR-Untersuchung einiger Catecholamin-SemichinoneDiese Arbeit wurde von der Deutschen Forschungsgemeinschaft und vom Fonds der Chemischen Industrie unterstützt. (1981)

Stegmann, Hartmut B. ; Bergler, H. Ulrich ; Scheffler, Klaus

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 398-399

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930414

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91

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Epimerengleichgewichte und Substituentenwechselwirkung bei 2-Oxetanonen (ß-Lactonen) (1981)

Mulzer, Johann ; Zippel, Matthias

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 405-406

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930420

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92

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Ein neuer Organometall-Cluster mit Ir4C2-Gerüst und fluktuierenden Hydridobrückenπ-Olefin-Iridium-Komplexe, 6. Mitteilung. Diese Arbeit wurde von der Deutschen Forschungsgemeinschaft und dem Fonds der Chemischen Industrie unterstützt. - 5. Mitteilung: J. Müller, W. Hähnlein, H. Menig, J. Pikkardt, J. Organomet. Chem. 197, 95 (1980). (1981)

Müller, Jörn ; Menig, Helmuth ; Pickardt, Joachim

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 407-408

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930422

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93

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Reaktion von Dicarbonyl(cyclopentadienyl)(isobuten)eisentetrafluoroborat mit Diphenylcyclopropenon: Komplexierung ohne RingöffnungDiese Arbeit wurde teilweise von der Research Corporation und vom US-Department of the Interior, Office of Water Research and Technology, unterstützt. (1981)

Woell, James B. ; Boudjouk, Philip

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 412-412

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Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930426

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94

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1,2λ3,3λ3-AzadiphosphiridineDiese Arbeit wurde vom Fonds der Chemischen Industrie, aus Mitteln des Landes Nordrhein-Westfalen sowie durch Chemikalienspenden der Bayer AG unterstützt. (1981)

Niecke, Edgar ; Nickloweit-Lüke, Anke ; Rüger, Reinhold

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 406-407

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Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

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Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930421

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Die Übergangsmetall-Stickstoff-MehrfachbindungProfessor Josef Goubeau zum 80. Geburtstag gewidmet (1981)

Dehnicke, Kurt ; Strähle, Joachim

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 451-464

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Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Zahlreiche Nitrido-Übergangsmetall-Komplexe weisen sehr geringe Metall-Stickstoff-Bindungslängen auf, die denen von M≡N-Dreifachbindungen entsprechen. Verbindungen dieses Typs werden derzeit intensiv untersucht. Insbesondere die Molybdänkomplexe werden als Modellsubstanzen für das Studium zumindest eines Teilschritts der N2-Assimilation angesehen. Der vorliegende Beitrag gibt einen Überblick über Struktur und Bindungsverhältnisse sowie über Synthesewege und Reaktionen dieser Komplexe.

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Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930506

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96

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Struktur- und Bindungsverhältnisse in cyclischen Schwefel-Stickstoff-Verbindungen - MolekülorbitalbetrachtungenProfessor Edgar Heilbronner zum 60. Geburtstag gewidmet (1981)

Gleiter, Rolf

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 442-450

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Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Die molekularen Strukturen der monocyclischen Schwefel-Stickstoff-Ringe wie S2N2, S3N3⊖, S4N3⊕ und S5N5⊕ können als Beispiele für elektronenreiche (4n + 2) π-Systeme betrachtet werden. Basierend auf einem achtgliedrigen Schwefel-Stickstoff-Ring mit zwölf π-Elektronen lassen sich die Strukturen von S4N4, S4N42⊕, P4S4, As4S4 und die der bicyclischen Verbindungen S4N5⊖, S4N5⊕ sowie S5N6 erklären.

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Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930505

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97

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Chemilumineszenz von Tricarbonyl(chloro)(1,10-phenanthrolin)rhenium(I) während der katalytischen Zersetzung von TetralinylhydroperoxidDiese Arbeit wurde von der Deutschen Forschungsgemeinschaft und dem Fonds der Chemischen Industrie unterstützt. (1981)

Vogler, Arnd ; Kunkely, Horst

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 470-471

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Schlagwort(e): Chemistry ; General Chemistry

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Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930508

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98

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Charge-Transfer-Wechselwirkungen zwischen den Liganden eines ternären ATP-Cu2+-Phenanthrolin-Komplexes (1981)

Sheldrick, William S.

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 473-474

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Schlagwort(e): Chemistry ; General Chemistry

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Thema: Chemie und Pharmazie

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Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930511

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Tetracyclo[4.1.0.02,4.O3,5]heptane aus 7,8-Diazatetracyclo[4.3.0.02,4.O3,5]non-7-enenProfessor Alfred Roedig zum 70. Geburtstag gewidmetDiese Arbeit wurde von der Deutschen Forschungsgemeinschaft und dem Fonds der Chemischen Industrie unterstützt. (1981)

Christl, Manfred ; Brunn, Erich

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 474-475

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Schlagwort(e): Chemistry ; General Chemistry

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Thema: Chemie und Pharmazie

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URL: http://dx.doi.org/10.1002/ange.19810930513

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Stickstoffdioxid und die isoelektronische COOH-Gruppe als 5-Elektronendonoren in Carbonylmetallkomplexen; Herstellung und Charakterisierung der ersten “Metallacarbonsäure„ (1981)

Balbach, Barbara K. ; Helus, Frantisek ; Oberdorfer, Franz ; [weitere]

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 93 (1981), S. 479-480

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19810930516

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