On-line coupling of microporous membrane liquid-liquid extraction and gas chromatography in the analysis of organic pollutants in water

被引：23

作者：

Lüthje, K ^{[1
]}

Hyötyläinen, T ^{[1
]}

Riekkola, ML ^{[1
]}

机构：

[1] Univ Helsinki, Dept Chem, Analyt Chem Lab, FIN-00014 Helsinki, Finland

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2004年 / 378卷 / 08期

基金：

芬兰科学院;

关键词：

microporous membrane liquid-liquid extraction; large-volume injection; on-line coupling; pesticides; polycyclic aromatic hydrocarbons (PAHs);

D O I：

10.1007/s00216-003-2461-5

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A method for the determination of hydrophobic pollutants in surface waters was developed. The pretreatment was done with microporous membrane liquid-liquid extraction, the extract was eluted to a sample loop in the large-volume injector valve of the gas chromatograph and the extract was injected on-line to the gas chromatograph. The method was optimised using standard compounds and the linearity, the limits of detection and quantification of the method were studied. The method allowed the determination of hydrophobic pesticides and PAHs at the ng L-1 level. The RSD values for the repeatability of the method varied from 4.2% to 25.6%, being on average 9.5%. Surface water samples from Finnish lakes and rivers were analysed.

引用

页码：1991 / 1998

页数：8

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