Determination of 16 phthalate esters in tea samples using a modified QuEChERS sample preparation method combined with GC-MS/MS

文献类型: 外文期刊

第一作者: Yin, Peng

作者: Yin, Peng;Liu, Xin;Chen, Hongping;Pan, Rong;Ma, Guicen

作者机构:

关键词: phthalate esters;tea;QuEChERS;gas chromatography-tandem mass spectrometry

期刊名称:FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT ( 影响因子:3.057; 五年影响因子:2.96 )

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收录情况: SCI

摘要: A modified QuEChERS method for the determination of 16 phthalate esters (PAEs) in tea samples using GC-MS/MS was developed and validated. The kinds and amounts of adsorbents were optimised, and the crude extracts were purified using primary secondary amine (PSA), graphitised carbon black (GCB) and anhydrous magnesium sulphate (MgSO4). Compared with extraction without matrix hydration, the addition of water could achieve higher extraction efficiency. The recoveries for PAEs obtained against matrix-matched standards at spiking levels of 50, 200 and 500 mu g kg(-1) ranged from 84.7% to 112.7% with relative standard deviations below 20% (n = 6) for all cases. Limits of detection (0.6-36.0 mu g kg(-1)) and quantitation (2.0-120.0 mu g kg(-1)) were achieved using the proposed method for all PAEs. A total of 105 tea samples were found to be contaminated with PAEs

分类号: TS2

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