title: [Supercritical fluid extraction and gas chromatographic analysis of four organochlorine pesticides in vegetable].
abstract: Supercritical fluid extraction(SFE) of pesticide residues of chlorothalonil, aldrin, dieldrin, and endrin from chives was evaluated. A mixture of vegetable sample: anhydrous magnesium sulfate(2:3) was used for extraction. The extract was analyzed by GC/ECD. The optimum SFE conditions for the pesticides in spiked samples were studied by orthogonal experiment. The chosen conditions were 30.40 MPa, 40 degrees C, 1 min static time, dynamic extraction with 15 mL of CO2, and collection in 3 mL of ethyl acetate. All the pesticides were extracted satisfactorily from their matrix.
authors.affiliation: Shadong Import & Export Commodity Inspection Bureau, Qingdao, 266002.
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: Q
authors.initials: Q
authors.lastname: Xu
authors.forename: K
authors.initials: K
authors.lastname: Jiao
authors.forename: G
authors.initials: G
authors.lastname: Cheng
mesh_terms: D027782:Chive / Q000737:chemistry; D002849:Chromatography, Gas; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues