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  • 1985-1989  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Structure of cadmium tellurate(IV), CdTeO3 (1985)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 41 (1985), S. 1152-1154 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270185006941
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Structure of mercury tellurate(IV) (1986)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 42 (1986), S. 917-918 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270186094064
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of carbonate traces in high-purity water by means of ion-chromatography (1985)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 321 (1985), S. 653-654 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary The determination of hydrogencarbonate in high-purity water applying ion-chromatography with indirect UV-detection is described. The results have been obtained using a low-capacity analytical ion-exchange column and eluents containing very pure weak organic acids. By direct injection of the sample concentration levels lower than 0.02 mg/l CO 3 2− have been detected.
    Notes: Zusammenfassung Die vorliegende Arbeit beschreibt eine Methode zur quantitativen Bestimmung geringer Konzentrationen an Hydrogencarbonat in reinen Wässern. Angewendet wurde die Ionen-Chromatographie ohne Suppressortechnik unter Einsatz eines variablen UV-VIS-Detektors. Die aufgezeigten Ergebnisse wurden erzielt unter Verwendung einer analytischen Ionenaustauschersäule sehr geringer Kapazität sowie mit hochreinen Laufmitteln schwacher Elutionskraft. Bei direkter Injektion der Proben ließen sich weniger als 0,02 mg/l CO 3 2− nachweisen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00489629
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Ion-chromatographic behaviour of carbonate species (1985)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 320 (1985), S. 485-489 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary Ion Chromatography is described as an alternative to traditional methods for quantitative determination of inorganic anions. Interest is focussed now to the development of the ion-chromatographic determination of anions related to weak acids. Chromatographic behaviour of carbonate species in water is studied applying “single-column ion chromatography”. The detection of the carbonate species has been carried out using a conductivity detector with electronic suppression as well as an indirect UV-detector. Two different anion-exchange columns have been proved, successfully.
    Notes: Zusammenfassung Die Ionen-Chromatographie stellt eine quantitative Bestimmungsmethode von Anionen dar und läßt sich als Alternative zu herkömmlichen Nachweisverfahren einsetzen. Das gilt auch für die Bestimmung von Ionen schwach dissoziierender Säuren. Die vorliegende Arbeit beschreibt das Verhalten von CO 3 2− , HCO3 −, bzw. CO2 in der Ionen-Chromatographie. Angewandt wurde hierbei die Ionen-Chromatographie ohne Suppressortechnik unter Einsatz eines Leitfähigkeitsdetektors mit elektronischer Unter grundkompensation bzw. eines variablen UV-VIS-Spektral-photometers. Zur Abtrennung und Bestimmung der Carbonatspecies wurden zwei analytische Anionenaustauschersäulen erfolgreich eingesetzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00479817
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Investigations concerning the system peak in ion-chromatography using indirect photometric detection (1986)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 325 (1986), S. 252-254 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary In single-column ion chromatography frequently a „system peak” is observed, which is marked as hydrogencarbonate peak in a great number of publications. The area and direction of the system peak depends on the pH-value of the sample as well as on the eluent. In addition a correlation between the hydrogencarbonate concentration and system peak has been proved. The correlation HCO 3 − system peak is studied and the results are described in this paper.
    Notes: Zusammenfassung Bei der Ionen-Chromatographie ohne Suppressortechnik tritt häufig ein Systempeak im Chromatogramm auf, der in Veröffentlichungen teilweise auch als Hydrogencarbonat-Peak ausgewiesen wird. Die Größe und Richtung des Systempeaks hängen vom pH-Wert der Probe und des Laufmittels ab. Zusätzlich tritt eine Korrelation mit dem Carbonatgehalt der Probe auf, deren Ursache wir untersucht haben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00498167
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of organic group parameters (AOCl, AOBr, AOs) in water by means of ion-chromatographic detection (1987)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 327 (1987), S. 213-219 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The control of water quality is often performed by analysis of organic group parameters, e.g., “Adsorbable Organic Halogen (AOX)”. The differentiation of the group parameter AOX and the determination of the parameter “Adsorbable Organic Sulfur Compounds (AOS)” can be performed by ion-chromatography for detection of the anions obtained after pyrohydrolysis of the organic adsorbed compounds. Investigations concerning pyrohydrolysis of organic solutes and enrichment on a nearly chlorine- and sulfur-free active charcoal have been performed. By means of this charcoal the determination of organic sulfur solutes in the μg/l range can be realized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00469819
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    Paper (German National Licenses)
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