VALIDATION OF AN ANALYTICAL RESIDUE METHOD FOR ANALYSIS OF GLYPHOSATE AND METABOLITE - AN INTERLABORATORY STUDY
VALIDATION OF AN ANALYTICAL RESIDUE METHOD FOR ANALYSIS OF GLYPHOSATE AND METABOLITE - AN INTERLABORATORY STUDY
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DOI：
10.1021/jf00072a006
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发表时间：
1986-11-01
影响因子：
6.1
通讯作者：
WILSON, GR
中科院分区：
文献类型：
--
作者：
COWELL, JE;KUNSTMAN, JL;WILSON, GR
建立了一种新的分析草甘膦和（氨基甲基）膦酸残留的方法。来自孟山都公司（Monsanto Co.）和其他实验室的五名不同的分析师参与了五种不同基质的测试：苜蓿饲料、卷心菜、葡萄、大豆谷物、环境水。这些被选择来代表各种各样的基质分析草甘膦相关残留物。该方法的基础是通过螯合离子交换进行浓缩和分离，随后通过柱后反应检测的高效液相色谱进行定量。该方法在0.05 ~ 5.00 ppm的浓度范围内有效，总分析回收率为80.9±±。草甘膦为13.8%,79.2。（氨基甲基）膦酸为13.8%。两种分析物的变异系数均为17%，与该浓度范围内化合物分析的预测值吻合较好。
A new residue method for the analysis of glyphosate and (aminomethyl)phosphonic acid has been validated with an interlaboratory study. Five different analysts from Monsanto Co. and other laboratories participated in testing of five different matrixes: alfalfa forage, cabbage, grapes, soybean grain, environmental water. These were chosen to represent the wide variety of matrixes analyzed for glyphosate-related residues. The cornerstone of the method is concentration and isolation via chelation ion exchange, with subsequent quantitation by HPLC with postcolumn reaction detection. The method was validated over the concentration range from 0.05 to 5.00 ppm with overall analytical recoveries of 80.9 .+-. 13.8% for glyphosate and 79.2 .+-. 13.8% for (aminomethyl)phosphonic acid. The coefficient of variation for both analytes was 17%, which fits well with that predicted for the analysis of compounds in this concentration range.