Quimica nova | |
Development and validation of a method of analysis of glyphosate in soy grains | |
Abreu, Adley Bergson Gonçalves de1  | |
[1] Universidade Federal de Mato Grosso, Cuiabá, Brasil | |
关键词: glyphosate; glyphosate-resistantsoybean; pesticide.; | |
DOI : 10.1590/S0100-40422008000100002 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
The main objective of this work is to developan efficient procedure to determine glyphosate in soybean grains. The cleanupof the aqueous extracts was done in two steps, beginning with liquid-liquidpartitioning and then solid-phase extraction with anion exchange resin. Afterderivatization with a mixture of trifluoroacetic anhydride (TFAA) and trifluoroethanol(TFE), quantification was done by gas chromatography coupled to mass spectrometry.The mean recovery and RSD of the spiked samples were, respectively, 80.5% and3.1% at level 0.200 mg kg-1, 93.3% and 18.7% at level 0.500 mg kg-1and 92% and 3.5% at level 1.000 mg kg-1. The method was linearin the working range (correlation coefficient = 0.9965).
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902012098161ZK.pdf | 193KB | download |