Journal
WATER RESEARCH
Volume 39, Issue 17, Pages 4204-4210Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2005.08.004
Keywords
organochlorine pesticides; derivations; headspace solid-phase microextraction; water analysis
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A porous sol-gel polymethylphenylvinylsiloxane-coated fiber was applied to optimize the headspace solid-phase microextraction (HS-SPME) conditions for the analysis of 11 organochlorine pesticides (OCPs) and their derivations in water. Their determination was carried out using gas chromatography (GC) with electron capture detector (ECD). The method developed was applied to the analysis of lake water samples. Detection limits varied from 0.835 to 13.0 ng/l and relative standard deviations (RSD <= 11.8%) were obtained showing that the precision of the method is reliable. The method also showed good linearity for the tested concentration range with regression coefficients (R-2) ranging between 0.980 and 0.999. Recoveries for all the analytes ranged from 71.5% to 115.5%. The results demonstrate the suitability of the HS-SPME/GC-ECD approach for the analysis of multi-residue OCPs in water. (c) 2005 Elsevier Ltd. All rights reserved.
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