Simultaneous esterification and acylation of pesticides for analysis by gas chromatography. 1. Derivatization of glyphosate and (aminomethyl)phosphonic acid with fluorinated alcohols-perfluorinated anhydrides
Glyphosate (N-(phosphonomethyl)glycine) and its major metabolite, (aminomethyl)phosphonic acid, were fully functionalized for analysis by gas chromatography and mass spectrometry by reaction with mixtures of fluorinated alcohols and perfluorinated anhydrides. All phosphonic and carboxylic acid group...
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Veröffentlicht in: | Journal of agricultural and food chemistry 1985-09, Vol.33 (5), p.944-947 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Glyphosate (N-(phosphonomethyl)glycine) and its major metabolite, (aminomethyl)phosphonic acid, were fully functionalized for analysis by gas chromatography and mass spectrometry by reaction with mixtures of fluorinated alcohols and perfluorinated anhydrides. All phosphonic and carboxylic acid groups were esterified and all amino groups were acylated; derivatization was effected at 100 degree C for 1 h. Average recoveries from potable water samples were 95, 90, and 104% respectively for glyphosate at the 10, 50, and 100 ppb levels respectively; (aminomethyl)phosphonic acid recoveries averaged 106, 99, and 114% at the 10, 50, and 100 ppb levels, respectively. |
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ISSN: | 0021-8561 1520-5118 |
DOI: | 10.1021/jf00065a042 |