Development and Validation of Multiclass Chiral Pesticide Residues Analysis Method in Tea by QuEChERS Combined Liquid Chromatography Quadruple-Linear Ion Trap Mass Spectrometry
文献类型： 外文期刊
作者： Liu, Hongcheng 1 ; Lin, Tao 1 ; Li, Qiwan 1 ;
作者机构： 1.Yunnan Acad Agr Sci, Inst Qual Stand & Testing Technol, Kunming 650223, Yunnan, Peoples R China; Minist Agr, Supervis & Testing Ctr Farm Prod Qual, Kunming 650223, Yunnan, Peoples R China; Minist Agr, Lab Qual & Safety Risk Assessment Agroprod, Kunming 650223, Yunnan, Peoples R China
期刊名称：JOURNAL OF AOAC INTERNATIONAL （ 影响因子：1.913； 五年影响因子：1.754 ）
ISSN： 1060-3271
年卷期： 2020 年 103 卷 3 期
页码：
收录情况： SCI
摘要： Background: No single pure enantiomeric pesticide residues was investigated and set regulations for tea quality safety and risk assessment. Objective: Due to lack of chiral pesticide analysis method and data, the Maximum residue limits (MRLs) about the chiral pesticides in tea was unknown. Method: An analytical method for the determination of chiral pesticide residues by QuEChERS combined chiral liquid chromatography quadruple/linear ion trap mass spectrometry (LC-MS/MS-Qtrap) was developed and applied to the analysis of various teas. Results: The mean recoveries for pesticides enantiomers ranged from 75.9% to 112.4%. Reproducibility represented by relative standard deviation percentage was 10% or less. Good linearity was achieved for all enantiomers with determination coefficients (r(2)) greater than 0.99. The detection of limit (CC alpha) and quantification of limit (CC beta) were 0.2 similar to 1 mu g/kg and 0.5 similar to 5 mu g/kg, respectively. Conclusions: The method was suitable for monitoring the enantiomeric pesticide residues in various teas. Highlights: Enantioselective multiclass pesticide residues were determined in various teas by LC-MS/MS-Qtrap, additional Qtrap scan functions greatly enhance the performance of screening, confirmation, and identification of chiral pesticides.
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