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Solid phase micro extraction and gas chromatography detection method for rapid determination of 14 organochlorine pesticides in environmental water samples . Solid phase micro extraction integrates extraction , concentration , injection in one, simple, rapid, and no organic solvents , papers by comparing polydimethylsiloxane ( PDMS 100μm ) , polydimethylsiloxane / divinylbenzene (PDMS / DVB, 65μm), polyacrylate ( PA , 85μm ) three extraction fiber adsorption performance of organochlorine pesticides found PDMS ( 100μm ) extraction fiber is more suitable for the enrichment of organochlorine pesticides . The paper also studied and optimized solid phase micro extraction experimental conditions , the impact of the extraction of the solid phase micro extraction factors such as extraction fiber , extraction time , extraction temperature , salinity , making the solid phase micro extraction conditions optimized under its greatest superiority . Experimental headspace extraction and immersion direct extraction of the similarities and differences of the extraction efficiency of 14 organochlorine pesticides , the results show that there are significant differences of the two extraction methods for the extraction efficiency of different organochlorine pesticides . 14 organochlorine pesticides linear study found , have a good linear relationship , the correlation coefficient of 0.98-0.99 lower limit of quantification of 0.2 to 40 ng / L , the detection limit from 0.1 to 10 ng / L , repeated measurements ( n = 5) relative standard deviation of less than 8% . Good optimization of the experimental conditions , the actual water samples for testing to prove that the law must speed , accurate and easy to operate , can meet the need for rapid analysis of organochlorine pesticides in water . The determination of organochlorine pesticides using solid phase microextraction - gas chromatography and established solid phase micro extraction method , a preliminary study of the distribution coefficient of organochlorine pesticides in different surfactant micelles , different extraction methods ( directly extracted headspace extraction ) and the type of surfactant (anionic surfactant sodium dodecyl sodium sulfate, SDS , cationic surfactant cetyltrimethylammonium bromide ammonium CTMAB , the non-ionic surfactant Triton X - 100) made ??a simple comparison .
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