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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die hohe Trennwirkung der Gas-Chromatographie bei der Analyse von Stoffgemischen und die gute Substanzspezifität der Massenspektrometrie führten zu einer gekoppelten Anwendung dieser beiden analytischen Spuren- und Mikromethoden mit dem Ergebnis, weit mehr gesicherte qualitative Aussagen wie auch quantitative Bestimmungen kompliziert zusammengesetzter Analysenproben zu erhalten als dies mit jeder dieser beiden Methoden allein möglich oder erreichbar ist. Die beiden Methoden, deren weitere gemeinsame Eigenschaft es ist, daß verdampfbare Proben zur Untersuchung kommen müssen, ergänzen einander, indem ihre beiderseitigen Schwächen aufgehoben werden. Die aufgrund der apparativen Bedingungen der Gas-Chromatographie und der Massenspektrometrie sich ergebenden Forderungen, die bei ihrer Kopplung berücksichtigt werden müssen, werden diskutiert.
    Notes: Abstract A combination of the high separation efficiency of gas chromatography with the favourable specifity of mass spectrometry makes possible more reliable qualitative statements and quantitative determinations of samples of complicated composition than attainable by either method alone. These methods, which both require evaporable samples, supplement each other by eliminating their mutual disadvantages. The requirements are discussed which have to be considered for coupling the two methods.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 242 (1939), S. 281-301 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden Hydrate und Alkalifluorid-Komplexsalze des Rhodiumfluorids dargestellt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The experience in this laboratory since 1955 is strongly in favor to the counting of any 14-C sample in the gas phase in the form of CO2, although a more thoroughly contrived gas-analytical apparatus and a more elaborate electronic set are required. As compared with barium-carbonate or even gas GM-counting, this method offers the advantage of a consistent, dependable, and highly efficient procedure. The samples are burned in a Liebig tube, the carbon dioxide is condensed into a high-vacuum and gas-mixing line. The CO2 content of the counter is 20%, the remainder being methane only; the plateau extends from 2800 to 3050 volts. The absolute efficiency may be chosen between 83 and 89%, the linear proportionality of activity and rate is granted up to 15000 cpm. The good counter characteristic is fettered to the quality of the amplifier. The pertinence of a separate and mutually independent control of the different amplification parameters is explained. A graphical scheme demonstrates the electronic treatment of the original pulse-mountains by differentiation, integration, discrimination, choice of paralysis time, and pulse shaping.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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