Title of article
On-line monitoring of trihalomethanes in drinking water using continuous-flow purge and cryofocusing gas chromatography–mass spectrometry
Author/Authors
Chen، نويسنده , , Tso-Ching and Her، نويسنده , , Guor-Rong Her، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
7
From page
229
To page
235
Abstract
A continuous-flow purge-and-trap–GC–MS system was developed for on-line monitoring of THMs (trihalomethanes) in drinking water. Three systems with different traps and purging flow-rates are discussed. In order to minimize interference from water vapor, total purge gas volume and injection temperature were controlled during analysis. Shorter sample concentration time and GC separation time reduced total cycle time to less than 5 min. The detection limits of the system could be lowered to 10 ppt, 25 ppt, 40 ppt, and 50 ppt (w/w) for CHCl3, CHCl2Br, CHClBr2, and CHBr3, respectively. This system could detect changes in sample concentration when applied to the on-line monitoring of THMs in drinking water.
Keywords
Trihalomethanes , Halogenated compounds
Journal title
Journal of Chromatography A
Serial Year
2001
Journal title
Journal of Chromatography A
Record number
1508334
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