文献类型： 外文期刊
作者： Qian, Mingrong 1 ; Zhang, Xiaoming 2 ; Zhao, Huiyu 1 ; Ji, Xiaofeng 1 ; Li, Xiaodan 1 ; Wang, Jianmei 1 ; Wu, Huizhen; 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China
2.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou, Zhejiang, Peoples R China
3.Zhejiang Shuren Univ, Coll Biol & Environm Engn, Hangzhou, Zhejiang, Peoples R China
关键词： animal feed; antibiotics; high-throughput analysis; thin-film microextraction
期刊名称：JOURNAL OF SEPARATION SCIENCE （ 影响因子：3.645； 五年影响因子：2.943 ）
ISSN： 1615-9306
年卷期： 2019 年 42 卷 18 期
页码：
收录情况： SCI
摘要： A high-throughput method based on ultrasonic-assisted extraction, 96-well plate thin-film microextraction was established to determinate 18 antibiotics in animal feed. In this method, the extraction was implemented by ultrasonic-assisted extraction for 30 min with disodium ethylenediaminetetraacetic acid-McIlvaine buffer (pH 5) containing 6% sodium chloride w/v, purified by thin-film microextraction and combined with 96-well plate system to improve the efficiency. Optimization of thin-film microextraction conditions was performed by methods of single factor and response surface, and finalized as: condition time: 20 min; adsorption time: 55 min; washing time: 5 s with water; desorption time: 30 min with acetonitrile/water (8: 2, v/v) containing 0.1% formic acid v/v. Evaluation of different extractive phases showed that polystyrene-divinylbenzene-polyacrylonitrile was the optimum coating. The analysis was performed by ultra-high performance liquid chromatography with tandem mass spectrometry. Recovery, inter-and intraday precision, linearity, limit of detection, and quantitation were evaluated. The average recoveries of 18 antibiotics were 66.6-93.5% at three spiked levels, intraday precision was 1-8.4%, and interday precision was 3.0-16.4%. The linearity was good for r(2) > 0.99. Limits of detection and quantification were found in the range of 1-14 and 4-48 mu g/kg, respectively.
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