title: [Rapid determination of 129 pesticide residues in vegetables and fruits by gas chromatography-triple quadrupole mass spectrometry].
abstract: An analytical method for the simultaneous determination of 129 pesticides in vegetables and fruits was established based on optimized QuEChERS with gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS). The samples were extracted with acetonitrile (containing 1% (v/v) acetic acid), then the extracts were determined by GC-MS/MS in multireaction monitoring (MRM) mode after being cleaned up with mixed solid-phase dispersion, and the external standard method was applied to quantify the pesticides. The results showed that all the 129 pesticides had good linearity in certain ranges with the correlation coefficients ( r2) higher than 0. 98. The average recoveries of the most of 129 pesticides in different matrices were in the range of 66.2% - 124.7% at the spiked level of 10 micro g/kg, with relative standard deviations (RSDs) of 0.9% - 24.4%. The limits of quantification (LOQs) of the method were 0.03 - 16.7 micro g/kg. The results demonstrated that the developed method is simple, rapid, sensitive and high efficient for screening multiple pesticide residues in vegetables and fruits.
authors.affiliation: Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Supervision and Testing Center for Vegetable Quality, Ministry of Agriculture, Beijing 100081, China.
authors.forename: Zhiling
authors.initials: Z
authors.lastname: Ma
authors.forename: Wen
authors.initials: W
authors.lastname: Zhao
authors.forename: Lingyun
authors.initials: L
authors.lastname: Li
authors.forename: Shuning
authors.initials: S
authors.lastname: Zheng
authors.forename: Huan
authors.initials: H
authors.lastname: Lin
authors.forename: Yanguo
authors.initials: Y
authors.lastname: Zhang
authors.forename: Qingzhen
authors.initials: Q
authors.lastname: Gao
authors.forename: Su
authors.initials: S
authors.lastname: Liu
mesh_terms: D005506:Food Contamination / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis*; D053719:Tandem Mass Spectrometry / Q000379:methods; D014675:Vegetables / Q000737:chemistry*
chemical_list: D010573:Pesticide Residues