期刊
CHROMATOGRAPHIA
卷 69, 期 7-8, 页码 709-717出版社
VIEWEG
DOI: 10.1365/s10337-009-0961-y
关键词
Gas chromatography; Solid phase extraction; Water samples; Chlorinated pesticides; Dioxins
Gas chromatography of dioxins and chlorinated pesticides in water samples has been performed after adsorption from 50 to 100 mL sample on to a cartridge containing 100 mg cyanopropyl-bonded porous silica. The dioxins and chlorinated pesticides were desorbed with 2 mL carbon disulfide, which is concentrated and analysed by gas chromatography coupled with an electron-capture detector. The average recovery of 0.20 ng mL(-1) of each chlorinated pesticide and of 0.50 ng mL(-1) of each dioxin from distilled water and river water samples (50 mL) is a parts per thousand yen97.2% with a standard deviation (SD) a parts per thousand currency sign 2.6. In the dioxin separation from chlorinated pesticides the recovery of dioxins at levels of 0.1-0.5 ng mL(-1) is a parts per thousand yen97.9% with a SD a parts per thousand currency sign 1.3, with traces of aldrin, heptachlorepoxide and 4,4'-DDD (a parts per thousand currency sign1.7%) by the CN-Sep-Pak cartridge, while the recovery of chlorinated pesticides at levels of 0.05-0.2 ng mL(-1) is a parts per thousand yen97.4% with a SD a parts per thousand currency sign 1.5, with traces of hep-dioxin (2.4%) and penta-dioxin (1.0%) by the C(18)-Sep-Pak cartridge connected in series to the CN-Sep-Pak cartridge.
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