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    J Chromatogr B Analyt Technol Biomed Life Sci. 2008 Nov 15;875(2):509-14. Epub 2008 Oct 9.

    Determination of glyphosate, glyphosate metabolites, and glufosinate in human serum by gas chromatography-mass spectrometry.

    Motojyuku M, Saito T, Akieda K, Otsuka H, Yamamoto I, Inokuchi S.

    Source

    Department of Emergency and Critical Care Medicine, Tokai University School of Medicine, Isehara, Kanagawa 259-1143, Japan.

    Abstract

    This paper describes an assay for the determination of glyphosate (GLYP), glyphosate metabolites [(aminomethyl) phosphonic acid] (AMPA), and glufosinate (GLUF) in human serum. After protein precipitation using acetonitrile and solid-phase extraction, serum samples were derivatized and analyzed by gas chromatography-mass spectrometry (GC-MS). The assay was linear over a concentration range of 3-100.0 microg/ml for GLYP, AMPA, and GLUF. The overall recoveries for the three compounds were >73%. The intra- and inter-day variations were <15%. Precision and accuracy were 6.4-10.6% and 88.2-103.7%, respectively. The validated method was applied to quantify the GLYP and AMPA content in the serum of a GLYP-poisoned patient. In conclusion, the method was successfully applied for the determination of GLYP and its metabolite AMPA in serum obtained from patient of GLYP-poisoning.

    PMID:
    18945648
    [PubMed - indexed for MEDLINE]

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