A multi-residue method for fast determination of pesticides in tea by ultra performance liquid chromatography-electrospray tandem mass spectrometry combined with modified QuEChERS sample preparation procedure
A multi-residue method for fast determination of pesticides in tea by ultra performance liquid chromatography-electrospray tandem mass spectrometry combined with modified QuEChERS sample preparation procedure
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DOI：
10.1016/j.foodchem.2010.10.017
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发表时间：
2011-04-14
期刊：
影响因子：
8.8
通讯作者：
Liu, Renjiang
中科院分区：
文献类型：
--
作者：
Chen, Guoqiang;Cao, Pengying;Liu, Renjiang
建立了茶叶中农药多残留的超高效液相色谱-电喷雾串联质谱快速检测方法（UPLC/MS/MS）QuEChERS方法用于样品制备。为了最大限度地减少茶叶的基质效应，使用石墨碳/石墨层的固相萃取（SPE）柱。应用氨基丙基硅烷化硅胶作为QuEChERS方法的补充。不同农药的定量限不同，但除敌敌畏外，所有农药都可以在5g茶叶样品中0.01mg kg（-1）的水平下测定（0 0 2 mg kg（-1））回收率为70%~ 12 0%，相对标准偏差（RSD）符合欧洲统一质量控制指南。通过对发酵和未发酵的中国茶叶样品的分析，考察了该方法的有效性和可靠性（C）
A multi-residue method was developed for rapid determination of pesticide residues in tea by ultra performance liquid chromatography-electrospray tandem mass spectrometry (UPLC/MS/MS) The QuEChERS method was used for sample preparation In order to minimise the matrix effects from tea a solid phase extraction (SPE) cartridge layered with graphite carbon/aminopropylsilanized silica gel was applied as complementary to QuEChERS method For accurate quantification representative matrix-matched calibration curves were applied to compensate matrix effects Limits of quantification varied with different pesticides but all can be measured at 0 01 mg kg(-1) level in a 5 g tea sample except dichlorvos (0 02 mg kg(-1)) Recoveries ranged from 70% to 120% and relative standard deviation (RSD) met the European United Quality Control guideline Efficiency and reliability of this method were investigated by the analysis of both fermented and unfermented Chinese tea samples (C) 2010 Elsevier Ltd All rights reserved