Simultaneous determination of four organotins in food packaging by high-performance liquid chromatography-tandem mass spectrometry

文献类型： 外文期刊

第一作者： She, Yongxin

作者： She, Yongxin

作者机构：

关键词： Organotin compounds;Food packaging;Simultaneous determination;LC-MS/MS

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

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年卷期：

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收录情况： SCI

摘要： A simple method based on high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the simultaneous determination of organotins-tri-n-butyltin chloride (TBT), triphenyltin chloride (TPT), dibutyltin dichloride (DBT), and diphenyltin dichloride (DPT)-in plastic food packaging. Samples were prepared by ultrasonic extraction with dichloromethane, followed by dissolution in acetonitrile containing 0.1% formic acid, and purification by an MCX column. The extracts were analyzed by LC-MS/MS in multiple reaction monitoring and positive modes with a C18 column; elution was carried out with a gradient of 0.1% formic acid and methanol containing 0.1% formic acid. The limits of detection for TBT, TPT, DBT, and DPT were 0.1, 0.6, 0.8, and 0.3 mu g kg(-1), respectively. The recovery of organotins in spiked samples ranged from 68% to 113% (relative standard deviation: 0.4-4.2%). The proposed method was successfully employed to identify the target analytes in plastic packaging used for milk and cake. (C) 2015 Elsevier Ltd. All rights reserved.

分类号： TS2`TS201.2

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