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New methods for determination of glyphosate and (aminomethyl)phosphonic acid in water and soil.

Journal of chromatography. A (2000-08-19)
E Börjesson, L Torstensson
ABSTRACT

New methods were developed to determine glyphosate, N-(phosphonomethyl)glycine, and its major metabolite, (aminomethyl)phosphonic acid in groundwater and soil. The methods involve ligand-exchange, anion-exchange and derivatisation and final identification and quantification by GC-MS. The limits of quantification in this experiment were 0.1 microg l(-1) for both compounds in water and 0.006 microg g(-1) for both compounds in soil. Decomposition in soil and occurrence in groundwater of the herbicide glyphosate was studied after its application for weed control on a Swedish railway embankment.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
(Aminomethyl)phosphonic acid, 99%
Supelco
(Aminomethyl)phosphonic acid, analytical standard