Trace analysis of ten chlorinated benzenes in water by headspace solid-phase microextraction

被引：105

作者：

He, Y ^{[1
]}

Wang, Y ^{[1
]}

Lee, HK ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

来源：

JOURNAL OF CHROMATOGRAPHY A | 2000年 / 874卷 / 01期

关键词：

headspace analysis; water analysis; extraction methods; chlorobenzenes;

D O I：

10.1016/S0021-9673(00)00067-4

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Headspace solid-phase microextraction (SPME), as a simple, solvent-free method, has been applied to the analysis of 10 chlorinated benzenes (CBs) present at trace levels in water samples. An SPME fibre coated with 100-mu m thick poly(dimethylsiloxane) was used for extraction. The analytical data exhibited a relative standard deviation (RSD) range of 1.19% (for pentachlorobenzene) to 8.19% (for hexachlorobenzene) for the 10 CBs; the RSD of most compounds was under 6%. The sensitivity of the method was enhanced with agitation and with addition of salt to the sample solutions. With mass spectrometric detection, the limit of detection was below 0.006 mu g/l for all 10 CBs after a 30-min sampling time. The linearity range was 0.02-20 mu g/l for the compounds studied. Water samples collected from a reservoir, and from the tap in a laboratory were analysed using the optimised conditions. (C) 2000 Elsevier Science BN. All rights reserved.

引用

页码：149 / 154

页数：6

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