PERFORMANCE OF THE GOULDEN LARGE-SAMPLE EXTRACTOR IN MULTICLASS PESTICIDE ISOLATION AND PRECONCENTRATION FROM STREAM WATER

被引：21

作者：

FOSTER, GD ^{[1
]}

FOREMAN, WT ^{[1
]}

GATES, PM ^{[1
]}

机构：

[1] US GEOL SURVEY,NATL WATER QUAL LAB,METHODS RES & DEV PROGRAM,ARVADA,CO 80002

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1991年 / 39卷 / 09期

关键词：

D O I：

10.1021/jf00009a016

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The reliability of the Goulden large-sample extractor in preconcentrating pesticides from water was evaluated from the recoveries of 35 pesticides amended to filtered stream waters. Recoveries greater than 90% were observed for many of the pesticides in each major chemical class, but recoveries for some of the individual pesticides varied in seemingly unpredictable ways. Corrections cannot yet be factored into liquid-liquid extraction theory to account for matrix effects, which were apparent between the two stream waters tested. The Goulden large-sample extractor appears to be well suited for rapid chemical screening applications, with quantitative analysis requiring special quality control considerations.

引用

页码：1618 / 1622

页数：5

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