Determination of sulfonamide antibiotics in fish and shrimp samples based on magnetic carbon nanotube dummy molecularly imprinted polymer extraction followed by UPLC-MS/MS
文献类型： 外文期刊
作者： Gao, Lei 1 ; Qin, Dongli 1 ; Chen, Zhongxiang 1 ; Wu, Song 1 ; Tang, Shizhan 1 ; Wang, Peng 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, 232 Hesong St, Harbin 150070, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Control Qual & Safety Aquat Prod, Beijing, Peoples R China
关键词： Carbon nanotubes; Dummy molecularly imprinted polymers; Fish; Magnetic separation; Sulfonamide antibiotics
期刊名称：ELECTROPHORESIS （ 影响因子：3.535； 五年影响因子：2.731 ）
ISSN： 0173-0835
年卷期： 2021 年 42 卷 6 期
页码：
收录情况： SCI
摘要： In this study, a novel purification method using magnetic solid-phase extraction (MSPE) based on magnetic carbon nanotube dummy molecularly imprinted polymer (MCNTMIP) nanocomposite was investigated for separation and enrichment of sulfonamide antibiotics (SAs) in fish and shrimp samples. The MCNTMIP nanocomposite was successfully synthesized by applying carbon nanotubes as supporting template, methacrylic acid as functional monomer, sulfabenzamide as the dummy template for SAs, and ethylene glycol dimethacrylate as crosslinking agent, then was characterized by Fourier-transform infrared spectrometry and vibrating sample magnetometry. The adsorption performance of MCNTMIP was evaluated by binding experiments, including static adsorption, kinetic adsorption, and selectivity recognition study. The results confirmed that an imprinted polymer layer was successfully constructed on the surface of the MCNTMIP and this sorbent has advantages of simple magnetic separation, specific molecular recognition, and high adsorption capacity. Combined with ultra-high performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS), we developed a rapid, sensitive, efficient MSPE method for detecting SAs analytes. Under the optimal conditions, the limits of detection were low to 0.1 mu g/kg, and the recoveries of SAs analytes were ranged between 90.2 and 99.9%. In addition, the precision values were ranged between 0.5 and 9.1%. This method was successfully applied to analyze SAs in fish and shrimp samples with satisfactory recoveries.
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