色谱2018，Vol.36Issue(6)：531-540,10.DOI:10.3724/SP.J.1123.2018.03036
气相色谱-串联质谱双内标法测定茶叶中53种农药残留
Determination of 53 pesticide residues in tea by gas chromatography-tandem mass spectrometry and double internal standard method
高艺羡 1陈萍虹 1聂丹丹1
作者信息
- 1. 通标标准技术服务有限公司厦门分公司,福建厦门 361000
- 折叠
摘要
Abstract
A gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS)method with tandem double columns was established for the determination of 53 pesticide residues in tea. The sample was extracted by acetonitrile with buffering salts of QuEChERS method, cleaned up with an ENVI-Carb/NH2 solid-phase extractant,and determined by GC-MS/MS. To reduce the matrix effect in GC-MS/MS,gulonic acid lactone and sorbitol were added to the standard solutions as protectants;additionally,anthraquione-D8 and triphenyl phosphate were used as double internal standards. The linear ranges were from 20 to 500 μg/L for 52 pesticides, and from 40 to 1000 μg/L for cypermethrin,with correlation coefficients higher than 0. 99. The limits of quantification (LOQs)of 28 pesticides were less than 10 μg/kg,and the LOQs of the other 25 pesticides ranged from 10 to 20 μg/kg. The recoveries were in the range 72. 5% -130. 9%,and the relative standard deviations (RSDs ) were in the range 0. 4%-19. 4%. This method is simple,rapid,sensitive,and reliable for the simultaneous identification and quantifi-cation of multiple residues in tea.关键词
双内标/气相色谱-三重四极杆质谱/农药残留/茶叶/保护剂/串联双毛细管色谱柱Key words
double internal standards/gas chromatography-triple quadrupole mass spectrome-try (GC-MS/MS )/pesticide residues/tea/protectants/tandem double capillary chromato-graphic columns分类
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高艺羡,陈萍虹,聂丹丹..气相色谱-串联质谱双内标法测定茶叶中53种农药残留[J].色谱,2018,36(6):531-540,10.
