A chitosan-polypyrrole@Fe3O4 nanocomposite for magnetic solid-phase extraction of macrolides from swine urine samples
文献类型： 外文期刊
作者： Liao, Qie Gen 1 ; Hu, Li Fang 1 ; Luo, Lin Guang 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Agr Prod Qual Safety & Stand Inst, Minist Agr, Lab Qual & Safety Risk Assessment Livestock & Pou, Nanchang 330200, Peoples R China
期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）
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收录情况： SCI
摘要： In this paper, a new method was established for the determination of four macrolides (azithromycin, roxithromycin, clarithromycin and tylosin tartrate) from swine urine samples by magnetic solid-phase extraction coupled with liquid chromatography tandem mass spectrometry. The extraction adsorbent was synthesized to form a chitosan-polypyrrole (CS-PPy)@Fe3O4 core-shell magnetic nanocomposite. The main factors influencing the extraction efficiency including the amount of adsorbent, solution pH, extraction time, and volume of desorption solution were studied and optimized. Under the optimal conditions, recoveries of the spiked samples ranged from 76 to 84% with the relative standard deviations lower than 10%. The limits of detection ranged from 0.04 to 0.2 mu g L-1 for azithromycin, roxithromycin, clarithromycin and tylosin. The proposed method was successfully applied for selective and efficient determination of macrolides from swine urine samples.
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