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.
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页码:277 / 288
页数:12
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