Determination of organophosphorus pesticides in cucumber and potato by stir bar sorptive extraction

被引：122

作者：

Liu, WM ^{[1
]}

Hu, Y ^{[1
]}

Zhao, JH ^{[1
]}

Xu, Y ^{[1
]}

Guan, YF ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dept Analyt Chem & Microinstrumentat, Dalian 116023, Peoples R China

来源：

JOURNAL OF CHROMATOGRAPHY A | 2005年 / 1095卷 / 1-2期

关键词：

stir bar sorptive extraction; solid-phase microextraction; organophosphorus pesticides; capillary gas chromatography; thermal desorption; thermionic specific detection;

D O I：

10.1016/j.chroma.2005.07.107

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Organophosphorus pesticides (OPPs) in vegetables were determined by stir bar sorptive extraction (SBSE) and capillary gas chromatography with thermionic specific detection (TSD). Hydroxy-terminated polydimethylsioxane (PDMS) prepared by sol-gel method was used as extraction phase. The effects of extraction temperature, salting out, extraction time on extraction efficiency were studied. The detection limits of OPPs in water were <= 1.2 ng/l. This method was also applied to the analysis of OPPs in vegetable samples and matrix effect was studied. Linear ranges of OPPs in vegetable samples were 0.05-50 ng/g with detection limits <= 0. 15 ng/g and the repeatability of the method was less than 20% relative standard deviation. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7

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