Abstract: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
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