Rapid Determination of Organonitrogen, Organophosphorus and Carbamate Pesticides in Tea by Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry (UPLC-MS/MS)
文献类型: 外文期刊
第一作者: Zhao, Hong-Xia
作者: Zhao, Hong-Xia;Yang, Guo-Sheng;Zhao, Shan-Cang;Deng, Li-Gang;Mao, Jiang-Sheng;Guo, Chang-Ying;Lu, Xiao;Zhao, Shan-Cang;Deng, Li-Gang;Mao, Jiang-Sheng;Guo, Chang-Ying;Lu, Xiao;Zhao, Shan-Cang;Deng, Li-Gang;Mao, Jiang-Sheng;Guo, Chang-Ying;Lu, Xiao;Aboul-Enein, Hassan Y.
作者机构:
关键词: Pesticides;UPLC-MS/MS;Multiresidue;Tea;Solid-phase extraction
期刊名称:FOOD ANALYTICAL METHODS ( 影响因子:3.366; 五年影响因子:3.07 )
ISSN: 1936-9751
年卷期: 2013 年 6 卷 2 期
页码:
收录情况: SCI
摘要: A rapid and effective multiresidue method has been developed for the determination of 18 pesticide residues (selected from organonitrogen, organophosphorus, and carbamate pesticides) in tea by ultrahigh-performance liquid chromatography-tandem mass spectrometry. Tea samples were extracted with acetonitrile and purified by a novel multilayer solid-phase extraction cartridge-Cleanet TPT. Evaluation of the influence of the mobile phase on the ionization efficiency, resolution, and sensitivity was carried out by comparing the acetonitrile-water and methanol-water with different modifiers. The recoveries of all the pesticides varied from 70 to 110 % with a relative standard deviation of less than 15 %, and the determination coefficient for each pesticide was R (2) > 0.99. Matrix-matched standard calibration curve was used to reduce errors associated with matrix-induced enhancement or suppression effects. The limit of detection for all targeted pesticides ranged from 0.03 to 1.5 mu g/kg. Applicability of this analytical approach was confirmed by successful determination of tea samples from different regions of China.
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