Determination of organophosphorus pesticides in water by solid-phase microextraction

被引：43

作者：

Su, PG ^{[1
]}

Huang, SD ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

来源：

TALANTA | 1999年 / 49卷 / 02期

关键词：

gas chromatography-flame photometric detector; solid-phase microextraction; organophosphorus pesticides; polyacrylate; polydimethyl siloxane; water;

D O I：

10.1016/S0039-9140(99)00002-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A solid-phase microextraction method coupled with a flame photometric detector was developed for the analysis of organophosphorus pesticides in water. Two kinds of fiber (100 mu m polydimethyl siloxane (PDMS) and 85 mu m polyacrylate (PA) fibers) were used and compared. Parameters that may affect the extraction, such as the duration of absorption and desorption, temperature of absorption, ionic strength, elutropic strength, and concentration of humic acid were investigated. Higher sensitivity and lower detection limits were achieved using a PA fiber than using a PDMS fiber. The detection limit is less than 0.3 mu g l(-1) for most of the analytes, except for mevinphos (420 mu g l(-1)). The precision is better than 9%. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：393 / 402

页数：10

共 37 条

[1]

[Anonymous], 1996, ANALYST, DOI DOI 10.1039/an9962100929

[2] SOLID-PHASE MICROEXTRACTION WITH THERMAL-DESORPTION USING FUSED-SILICA OPTICAL FIBERS [J].