FIELD DETECTION OF ORGANOCHLORINE PESTICIDES BY THERMAL-DESORPTION GAS-CHROMATOGRAPHY MASS-SPECTROMETRY

被引：14

作者：

ROBBAT, A

LIU, CJ

LIU, TY

机构：

[1] Trace Analytical Measurement Laboratory, Department of Chemistry, Tufts University, Medford

来源：

JOURNAL OF CHROMATOGRAPHY | 1992年 / 625卷 / 02期

关键词：

D O I：

10.1016/0021-9673(92)85212-C

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thermal desorption gas chromatography-mass spectrometry (TDGC-MS) was evaluated for field detection of organochlorine pesticides in soil/sediment and water. Rapid, 3 min/sample, TDGC-MS selected ion monitoring (SIM) yielded detection limits of 50 ng/g and 40 ng/l pesticide in soil (2 g) and water (500 ml), respectively, with measurement precision <40%. MS total ion current-selected ion extraction (TIC-SIE) measurements yielded somewhat higher detection limits with measurement precision < 20%. Examples of selective pesticide detection in the presence of a wide variety of environmental contaminants in soils, pond and sea waters are provided.

引用

页码：277 / 288

页数：12

共 17 条

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