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    Volume 29, Issue 4 (October 1984)

    Improved Recovery and Stability of Ethanol in Automated Headspace Analysis

    (Received 3 October 1983; accepted 10 January 1984)

    CODEN: JFSOAD

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    Abstract

    Solutions are reported here for two problems in automated headspace gas chromatographic analysis for ethanol. The first is the catalytic oxidation of ethanol by oxyhemoglobin, a process that is limited only by the amount of oxygen in the sealed vessel. This reaction is prevented by the addition of sodium dithionite. The other problem, the lack of a suitable salting-out agent, led to the selection of ammonium sulfate, which improved recovery of ethanol as well as enhancing method precision. A procedure incorporating these improvements is described.


    Author Information:

    Christmore, DS
    Production chemist and toxicology staff specialist, Bio-Science Laboratories, Van Nuys, CA

    Doshier, LA
    Production chemist and toxicology staff specialist, Bio-Science Laboratories, Van Nuys, CA

    Kelly, RC
    Willow Toxicology Group, Pasadena, CA


    Stock #: JFS11770J

    ISSN: 0022-1198

    DOI: 10.1520/JFS11770J

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    Title Improved Recovery and Stability of Ethanol in Automated Headspace Analysis
    Symposium , 0000-00-00
    Committee E30