In:
Journal of AOAC INTERNATIONAL, Oxford University Press (OUP), Vol. 69, No. 3 ( 1986-05-01), p. 458-461
Abstract:
An analytical method has been developed for determination of glyphosate herbicide and its major metabolite, (aminomethyl)phosphonic acid (AMFA), in natural waters. Sample pretreatment consisted of filtration, addition of phosphate buffer, concentration by rotary evaporation, and a final filtration before derivatization with 9-fluorenylmethyl chloroformate. The derivatives were separated by anion exchange liquid chromatography and measured with a fluorescence detector. Standard curves were linear over 3 orders of magnitude and minimal detectable quantities were 10 ng/mL for glyphosate and 5 ng/mL for AMPA. The 20-fold concentration factor realized in sample preparation corresponds to ppb method detection limits for glyphosate and AMPA in natural waters. Recovery and storage studies were performed and are discussed.
Type of Medium:
Online Resource
ISSN:
0004-5756
DOI:
10.1093/jaoac/69.3.458
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
1986
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