title: [Determination of 193 pesticide residues in vegetables and fruits by gas chromatography-mass spectrometry].
abstract: On the basis of optimization of solid phase extraction adsorbent, eluting solvent types and amounts, a gas chromatography-mass spectrometric method was developed for the determination of 193 pesticide residues in vegetables and fruits. The analytes were extracted from the samples using acetonitrile. The extract was cleaned-up with a C18/PSA solid-phase extractor, eluted by acetonitrile and analyzed by GC-MS under selected ion monitoring (SIM) mode using triphenyl phosphate (TPP) as internal standard. The linear range was from 10 to 1 000 microg/L for 130 pesticides, from 20 to 1 000 microg/L for 34 pesticides, from 50 to 1 000 microg/L for 26 pesticides, from 100 to 1 000 microg/L for the other 3 pesticides with the good correlation coefficients (r > or = 0.996 7). The limits of detection were 0.04 - 8.26 microg/kg. The mean recoveries of the pesticides were 71.6% -117.9%. The relative standard deviations were 3.0% - 11.8%. This method is simple, rapid, sensitive and specific. It is appropriate for the simultaneous identification and quantification of the multi-residues in fruits and vegetables.
authors.affiliation: Food and Agricultural Products Testing Agency, Shandong Entry-Exit Inspection and Quarantine Bureau Qingdao 266002, China. cuishuh@163.com
authors.forename: Shuhua
authors.initials: S
authors.lastname: Cui
authors.affiliation: College of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China.
authors.forename: Weishuang
authors.initials: W
authors.lastname: Chen
authors.affiliation: Inspection and Quarantine Technology Center of Linyi Exit-Entry Inspection and Quarantine Bureau, Linyi 276034, China.
authors.forename: Jialiang
authors.initials: J
authors.lastname: Qian
authors.affiliation: Inspection and Quarantine Technology Center of Linyi Exit-Entry Inspection and Quarantine Bureau, Linyi 276034, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Duan
authors.affiliation: Inspection and Quarantine Technology Center of Linyi Exit-Entry Inspection and Quarantine Bureau, Linyi 276034, China.
authors.forename: Tongying
authors.initials: T
authors.lastname: Liu
authors.affiliation: Inspection and Quarantine Technology Center of Linyi Exit-Entry Inspection and Quarantine Bureau, Linyi 276034, China.
authors.forename: Lidong
authors.initials: L
authors.lastname: Zhang
mesh_terms: D005638:Fruit; D008401:Gas Chromatography-Mass Spectrometry; D010573:Pesticide Residues / Q000032:analysis*; D014675:Vegetables
chemical_list: D010573:Pesticide Residues