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  • 1
    Electronic Resource
    Electronic Resource
    Structure of peridinin, the characteristics dinoflagellate carotenoid (1971)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 93 (1971), S. 1823-1825 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00736a065
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Elektrophorese der Seltenen Erden auf Acetylzellulose (1966)
    Springer
    Microchimica acta 54 (1966), S. 1101-1113 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary Previous work on the electrophoretic separation of rare earth mixtures inα-hydroxyisobutyric acid was continued using cellogel strips and radioactive tracers. The purity and sequence were determined byγ-spectrometric analysis and the decay of the various activities. The detection of rare earths by direct activation of the electropherogram is demonstrated. Mixtures containing all the lanthanoides are clearly separated.
    Abstract: Résumé A la suite de travaux récents, on a étudié la séparation par électrophorèse de terres rares en mélanges dans l'acideα-hydroxyisobutyrique, sur bandes de Cellogel avec noyaux radioactifs. On s'est assuré de la pureté et de la séquence des terres rares sur les enregistrements électrophorétiques d'après la diminution des activités individuelles et en prenant le spectreγ. Les possibilités de recherche par analyse par activation apparaissent immédiatement sur les enregistrements électrophorétiques. On peut faire la séparation parfaite de mélanges de tous les lanthanides.
    Notes: Zusammenfassung In Fortsetzung früherer Arbeiten wurde die elektrophoretische Trennung von Gemischen Seltener Erden inα-Hydroxyisobuttersäure auf Cellogelstreifen mit radioaktiven Nukliden untersucht. Die Reinheit und die Sequenz der Erden auf den Elektropherogrammen wurde durch das Abklingen der einzelnen Aktivitäten und durch Aufnahme vonγ- Spektren gesichert. Aktivierungsanalytische Nachweismöglichkeiten unmittelbar auf den Elektropherogrammen werden demonstriert. Mischungen aller Lanthanoide können einwandfrei aufgetrennt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01217716
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  • 3
    Electronic Resource
    Electronic Resource
    Elektrophorese der Seltenen Erden auf Acetylzellulose (1964)
    Springer
    Microchimica acta 52 (1964), S. 1089-1096 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A study was made of the application of high tension electrophoresis for the separation of mixtures of rare earths in a medium ofα-hydroxyisobutyric acid. Trials on paper and acetylcellulose films are described. After selected lanthanides had been successfully separated, it was possible eventually to separate all rare earths. The separation times were 15 to 20 minutes. A short discussion is given of the possibility of applying this procedure to transuranic earths.
    Abstract: Résumé On a étudié l'emploi de l'électrophorèse sous haute tension pour la séparation des mélanges de terres rares en milieu α-hydroxy-isobutyrique. On décrit les expériences sur papier et sur feuilles d'acétylcellulose. Après que la séparation des lanthanides désirées ait réussi, on peut aussi effectuer, pour finir, celle de toutes les terres rares. Les temps de séparation se sont élevés à 15–20 minutes. On discute brièvement la possibilité d'appliquer cette méthode aux transuraniens.
    Notes: Zusammenfassung Die Anwendung der Hochspannungselektrophorese zur Trennung von Gemischen Seltener Erden in einem Medium vonα-Hydroxyisobuttersäure wurde untersucht. Experimente auf Papier und Acetylzellulosefolien werden beschrieben. Nachdem die Trennung ausgewählter Lanthaniden gelungen war, konnte schließlich auch die Auftrennung aller Seltenen Erden erreicht werden. Die Trennzeiten betrugen 15 bis 20 Minuten. Die Anwendungsmöglichkeit für Transurane wird kurz diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01224575
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  • 4
    Electronic Resource
    Electronic Resource
    Anwendungen eines HPLC Amine Modifiers zur Zuckeranalyse in der Lebensmittelchemie (1980)
    Springer
    Chromatographia 13 (1980), S. 432-436 
    Details
    ISSN: 1612-1112
    Keywords: HPLC ; HPLC Amine Modifier I[72413-78-6] ; Sugars ; Oligosaccharides ; Maltodextrins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Durch in situ Imprägnierung von Kieselgel-HPLC-Säulen mit HPLC Amin Modifier I werden Trennsäulen erhalten, die zur Analyse von Kohlehydratgemischen besonders geeignet sind und gegenüber den chemisch gebundenen aminphasen eine Reihe von Vorteilen besitzen, die kurz diskutiert werden. Die Anwendung dieser Technik für Zuckertrennungen in der Lebensmittelchemie wird an Hand einiger Beispiele wie Fruchtsäfte und Limonaden, Marmelade, Maltodextrine und Glucosesirup gezeigt.
    Notes: Summary Thein situ impregnation of silica HPLC columns with HPLC Amine Modifier I yields columns that are useful for the analysis of carbohydrate mixtures. Compared with chemically-bonded amine phases the impregnated columns show a number of advantages that are briefly discussed. The application of this technique to sugar separation problems in food chemistry is demonstrated by way of a number of examples, including soft drinks, jams, fruit juices, maltodextrins and corn syrup.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261525
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  • 5
    Electronic Resource
    Electronic Resource
    Editorial (1980)
    Springer
    Chromatographia 13 (1980), S. 377-377 
    Details
    ISSN: 1612-1112
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261516
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Lipids of fish parasites and their hosts: fatty acid fingerprints of four species of acanthocephalans and of their hosts' intestinal tissues (1995)
    Springer
    Parasitology research 81 (1995), S. 522-526 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The fatty acid fingerprints of total lipid extracts from the four fish parasitesAcanthocephalus lucii, Neoechinorhynchus rutili, Paratenuisentis ambiguus, andPomphorhynchus laevis were investigated by capillary gas-liquid chromatography (GLC). The fatty acid patterns of the parasites were compared with those of their respective host tissue, viz., intestinal tract tissue of infected perch, brown trout, eel, and chub. The highly complex gas chromatograms revealed significant differences not only between parasite and host tissue but also between the parasites themselves. For instance, all the parasites contained much more eicosapentaenoic acid (20∶5n-3) than did the respective fish intestinal tissue. Differences were also observed between the presoma and metasoma ofPomphorhynchus laevis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00931796
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  • 7
    Electronic Resource
    Electronic Resource
    Modellversuche zur elektrophoretischen Abtrennung trägerfreier Seltener Erden. I (1967)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 228 (1967), S. 261-266 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde demonstriert, daß die Methode der Elektrophorese Seltener Erden auf Cellogel in α-Hydroxyisobuttersäurelösung auch zur Abtrennung geringster Mengen trägerfreier Aktivitäten aus neutronenbestrahlten Erden geeignet ist. Als Beispiel wird eine Abtrennung von Promethium aus neutronenbestrahltem Neodym gebracht und die Reinheit der abgetrennten Aktivitäten durch ihre γ-Spektren demonstriert.
    Notes: Summary It is shown that the electrophoresis of rare earths on Cellogel in α-hydroxy-isobutyric acid is suitable for the separation of minute amounts of carrier-free activities from neutron-activated earths. This is demonstrated by a separation of promethium from neutron-activated neodymium, in which the purity of the separated activities is determined by their γ-spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00514174
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  • 8
    Electronic Resource
    Electronic Resource
    Mass fragmentation and structure of siphonaxanthin, siphonein and derivatives (1971)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 5 (1971), S. 565-572 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: High resolution mass spectrometry has been employed to establish the structural formulae of the unique carotenoid pigment siphonaxanthin, its natural ester, siphonein and several derivatives. Siphonaxanthin exhibits a fragmentation reaction that is unusual among carotenoid pigments, namely, the elimination of carbon dioxide, observed as [M - CO2] and [M - (CO2 + H2O)]. This reaction involves the migration of an oxygen atom. Siphonaxanthol, a partially hydrogenated siphonaxanthin, exhibits a similar reaction involving the elimination of carbon monoxide and formaldehyde. From the fragmentation of derivatives of siphonaxanthin, such as the triacetate, the dimethyl ether and siphonaxanthol, and also from the fragmentation of related pigments, such as loroxanthin and fucoxanthin, the unique structural units responsible for the elimination of the carbon dioxide and carbon monoxide have been identified.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210050508
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of 2-hydroxybiphenyl in milk by HPLC (1981)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 4 (1981), S. 242-243 
    Details
    ISSN: 0935-6304
    Keywords: HPLC ; Milk extract concentrate ; 2-Hydroxybiphenyl + 4-hydroxybiphenyl by addition of 0.1% glacial acetic acid ; 0.03 ppm detection limit ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240040513
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    HPLC of santonin and phenolphthalein in anthelmintic tablets (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 220-220 
    Details
    ISSN: 0935-6304
    Keywords: Liquid chromatography, HPLC ; Anthelmintic medicine ; Santonin ; Phenolphthalein ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240010417
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    Paper (German National Licenses)
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