Determination of veterinary drug/pesticide residues in livestock and poultry excrement using selective accelerated solvent extraction and magnetic material purification combined with ultra-high-performance liquid chromatography-tandem mass spectrometry

文献类型： 外文期刊

第一作者： Wang, Jianmei

作者： Wang, Jianmei;Xu, Jie;Ji, Xiaofeng;Yang, Hua;Zhang, Hu;Ni, Xiaolei;Qian, Mingrong;Xu, Jie;Zhang, Xiaoming;Li, Zuguang;Wu, Huizhen

作者机构：

关键词： Accelerated solvent extraction; Magnetic material; Livestock and poultry excrement; Veterinary drug residues; Pesticide residues

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： 2020 年 1617 卷

页码：

收录情况： SCI

摘要： An ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method based on selective accelerated solvent extraction and magnetic material purification was established to analyze the residues of various veterinary antibiotics and agricultural fungicides and insecticides in livestock and poultry excrement. Methanol-acetonitrile (4:1, V/V) was used as the extraction solvent and static extraction was conducted three times in 5 min. Preliminary purification was achieved by adding 0.5 g acidic alumina-florisil (1:1, W/W) to the extraction cell while the extraction was conducted. This preliminarily-purified extract was further purified using magnetic material, then analyzed using UPLC-MS/MS. Under optimal conditions, 33 types of antibiotics, including 3 amphenicols, 8 macrolides, 17 sulfonamides and 5 nitroimidazoles, as well as 37 types of pesticides, including 27 insecticides and 10 fungicides, were detected. Recoveries ranged from 60.3% to 110.0% at three spiked concentrations (10 mu g/kg, 20 mu g/kg and 50 mu g/kg), the detection limits ranged from 0.2 to 3.5 mu g/kg and the quantitative limits ranged from 0.5 to 11.5 mu g/kg. This newly-established method was tested using 30 livestock and poultry excrement samples and confirmed its use for determining veterinary drugs and pesticides in practical samples. (C) 2019 Elsevier B.V. All rights reserved.

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