Magnetic molecularly imprinted polymers for the determination of beta-agonist residues in milk by ultra high performance liquid chromatography with tandem mass spectrometry

文献类型： 外文期刊

第一作者： Liu, Hongcheng

作者： Liu, Hongcheng;Lin, Xin;Lin, Tao;Luo, Yinglan;Li, Qiwan;Liu, Hongcheng;Lin, Xin;Lin, Tao;Luo, Yinglan;Li, Qiwan;Liu, Hongcheng;Lin, Xin;Lin, Tao;Luo, Yinglan;Li, Qiwan;Zhang, Yulong

作者机构：

关键词： Beta-agonists;Magnetic nanoparticles;Molecularly imprinted polymers;Tandem mass spectrometry

期刊名称：JOURNAL OF SEPARATION SCIENCE （ 影响因子：3.645； 五年影响因子：2.943 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A simple, accurate, and highly sensitive analytical method was developed in this study for the determination of nine beta-agonists in milk. In this method, a new magnetic adsorbent of molecularly imprinted polymers/magnetic nanoparticles prepared by simple physical blending was adopted, which enabled magnetic solid-phase extraction. Thus, the resultant material can be separated from the solvent rapidly and conveniently by a magnet. Two kinds of molecularly imprinted polymer/magnetic nanoparticles materials were fabricated, and the characteristics of materials such as the ratio, pH, amount, desorption, and regeneration were investigated. The analytes were quantified by ultra high performance liquid chromatography coupled to an electrospray ionization tandem mass spectrometer operating in multiple reaction monitoring modes. The detection limit of the method was 0.003-0.3 mu g/L, and the detection capability was 0.01-0.3 mu g/L. The recoveries of these compounds were 65.7-114% at three spiked levels. Reproducibility represented by relative standard deviation was 11.2% or less. The method was successfully applied to the screening of real samples obtained from local markets and confirmation of the suspected target analytes.

分类号： O6

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