GC-MS ANALYSIS OF N-PHOSPHONOMETHYL-GLYCINE (GLYPHOSATE) SAMPLES THROUGH DERIVATIZATION WITH A PERFLUOROANHYDRIDE AND TRIFLUOROETHANOL - IDENTIFICATION OF BY-PRODUCTS

Authors
NATANGELO M BENFENATI E DEGREGORIO G FANELLI R CIOTTI G
Citation
M. Natangelo et al., GC-MS ANALYSIS OF N-PHOSPHONOMETHYL-GLYCINE (GLYPHOSATE) SAMPLES THROUGH DERIVATIZATION WITH A PERFLUOROANHYDRIDE AND TRIFLUOROETHANOL - IDENTIFICATION OF BY-PRODUCTS, Toxicological and environmental chemistry, 38(3-4), 1993, pp. 225-232
Citations number
16
Categorie Soggetti
Toxicology,"Environmental Sciences",Chemistry
Journal title
Toxicological and environmental chemistry → ACNP
ISSN journal
02772248
Volume
38
Issue
3-4
Year of publication
1993
Pages
225 - 232
Database
ISI
SICI code
0277-2248(1993)38:3-4<225:GAON(S>2.0.ZU;2-Y
Abstract
Glyphosate (N-phosphonomethyl-glycine) herbicide samples were analysed qualitatively using gas chromatography-mass spectrometry (GC-MS) thro ugh derivatization with pentafluoropropionic anhydride plus trifluoroe thanol. Besides the expected glyphosate perfluoroacetylated derivative , other compounds were observed and identified using this technique an d MS alone with the direct inlet system (DIS). Three processes are pro bably involved in the formation of these products: 1) incomplete deriv atization; 2) glyphosate degradation during the reaction; 3) traces of chemical impurities in the pesticide sample.