Determination of organochlorine pesticides by gas chromatography with solid-phase microextraction
Originals Gas Chromatography
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Summary
A study of different extraction techniques for the determination of a selected group of organochlorine compounds in surface waters is presented. Comparison of liquid-liquid extraction (LLE) with solid-phase extraction (SPE) and solid-phase microextraction (SPME) with fibers of different polarity shows that SPME with a recently commercialised fiber of polydimethylsiloxane divinylbenzene allows these compounds to be determined in surface waters with good extraction efficiencies. Extraction time, effect of temperature, ionic strength and pH were optimised, allowing quantification in agricultural effluents in the range 1.0–60 ng·L−1.
Key Words
Gas chromatography Solid-phase microextraction Polydimethylsiloxane-divinylbenzene fibre Organochlorine compounds Polluted water samplesPreview
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