Solid-phase microextraction for the determination of iodinated trihalomethanes in drinking water

被引:37
作者
Cancho, B
Ventura, F
Galceran, MT
机构
[1] Societat Gen Aigues Barcelona SA, AGBAR, Barcelona 08009, Spain
[2] Univ Barcelona, Dept Analyt Chem, E-08028 Barcelona, Spain
关键词
solid-phase microextraction; extraction methods; headspace analysis; water analysis; trihalomethanes; halogenated compounds;
D O I
10.1016/S0021-9673(99)00320-9
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A headspace solid-phase microextraction (HS-SPME) method has been developed for the determination of iodinated trihalomethanes (ITHMs) in treated water samples. Mixed THMs (bromochloroiodo-, bromodiiodo-, chlorodiiodo-, dibromoiodo- and dichloroiodo-) were previously synthesized since commercial standards are not available. HS-SPME has shorter equilibration times than direct SPME, a cleaner background and a longer fiber life. Experimental parameters such as the selection of SPME coatings, sample volume, extraction time and addition of salts were studied. The Carbowax-divinylbenzene fiber appears to be the most suitable for the determination of ITHMs. Analytical parameters such as linearity, limit of detection and precision were also evaluated. HS-SPME was compared to liquid-liquid microextraction for the analyses of spiked treated water samples, obtaining a good agreement. It is concluded that HS-SPME has a great potential for drinking water analysis. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
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页码:197 / 206
页数:10
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