Simultaneous determination of three pesticide adjuvant residues in plant-derived agro-products using liquid chromatography-tandem mass spectrometry

文献类型： 外文期刊

第一作者： Li, Hui

作者： Li, Hui;Jiang, Zejun;Cao, Xiaolin;Su, Hang;Shao, Hua;Jin, Fen;Wang, Jing;Abd El-Aty, A. M.;Abd El-Aty, A. M.

作者机构：

关键词： Pesticide adjuvant;Plant-derived agro-product;Isotope-labelled internal standard;Liquid chromatography tandem mass;spectrometry;QuEChERS

期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.759； 五年影响因子：4.302 ）

ISSN： 0021-9673

年卷期： 2017 年 1528 卷

页码：

收录情况： SCI

摘要： Herein, an accurate and reliable isotope-labelled internal standard method was developed and validated for simultaneous determination of three polar pesticide adjuvants, namely 2-pyrrolidone, N-methyl-2-pyrrolidone, and N-ethyl-2-pyrrolidone in plant-derived agro-products. Matrices, including apple, cabbage, tomato, cucumber, rice, and wheat were extracted with a modified quick, easy, cheap, effective, rugged, and safe "QuEChERS" method and purified with a new clean-up sorbent (Z-Sep). A hydrophilic interaction liquid chromatography column (HILIC), exhibiting a lipophilic-hydrophilic character, was used to separate the three analytes over 10 min using liquid chromatography tandem mass spectrometry (LC-MS/MS). Matrix effects in various matrices were evaluated and an isotope-labelled internal standard method was employed to compensate for ion enhancement/suppression effects. At three fortification levels (2.0, 5.0, and 20.0 mu g/kg), the mean recoveries ranged from 78.5 to 112.1% with relative standard deviations (RSDs) < 11.0% for all tested analytes. The limits of detection (LODs) and quantification (LOQs) were 0.04-0.45 and 0.12-1.58 mu g/kg in various matrices, respectively. The developed experimental protocol was successfully applied to monitor different samples purchased from local markets in Beijing, China. In conclusion, the developed method exhibited both high sensitivity and satisfactory accuracy and is suitable for the simultaneous determination of the three tested pesticide adjuvant residues in agro-products of plant origin. (C) 2017 Elsevier B.V. All rights reserved.

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