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投稿时间:2023-09-12
投稿时间:2023-09-12
中文摘要: 以磁性活性炭为载体,己烯雌酚为模板分子,甲基丙烯酸为功能单体,三羟甲基丙烷三甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,乙腈为致孔剂,通过表面分子印迹技术制备己烯雌酚磁性分子印迹聚合物(magnetic molecularly imprinted polymers, MMIPs),并对该聚合物进行表征与吸附性能研究,建立磁固相萃取与高效液相色谱联用检测牛奶中己烯雌酚残留量的方法。结果表明:己烯雌酚浓度在0.15~150.00 mg/L 范围内,与对应峰面积呈良好线性关系,MMIPs 对己烯雌酚的最大吸附容量为127.85 mg/g,检出限为2.00×10-6 mg/mL,对牛奶进行加标回收试验,加标回收率为87.56%~98.58%,相对标准偏差(relative standard deviation, RSD)为3.26%~6.28%。
Abstract:Magnetic molecularly imprinted polymers (MMIPs) were prepared by surface molecular imprinting technology. Magnetic activated carbon was used as carrier, diethylstilbestrol as template molecule, methacrylic acid as functional monomer, trimethylolpropane trimethacrylate as crosslinking agent, azobisisobutyronitrile as initiator, and acetonitrile as pore causing agent. The characterization and adsorption properties of the polymer were studied, and a method was established for the detection of diethylstilbestrol residue in milk by magnetic solid extraction combined with high performance liquid chromatography. The experimental results showed that the concentration of diethylstilbestrol in the range of 0.15-150.00 mg/L had a good linear relationship with the corresponding peak area. The maximum adsorption capacity of MMIPs on diethylstilbestrol was 127.85 mg/g. The detection limit was 2.00×10-6 mg/mL. The recovery of spiked milk was 87.56%-98.58%.Relative standard deviation (RSD) was 3.26%-6.28%.
keywords: molecularly imprinted magnetic solid phase extraction high performance liquid chromatography magnetic activated carbon diethylstilbestrol
文章编号:202501019 中图分类号: 文献标志码:
基金项目:江苏省海洋资源开发研究院开放基金课题(JSIMR202205、JSIMR202206、JSIMR202207);江苏省研究生科研与实践创新计划项目(KYCX2022-33);校企合作基金省级项目(55090052023196);校级本科教育教学改革项目(JGX2023001Z);省级农业科技创新与推广补助专项(青年人才)资金;党建与思想政治教育研究立项课题(DS202342)
作者 | 单位 |
沙鸥1,吴赟帆1,戴欣成2,李慧文2,王滋文1,张璞1,刘佳洁1,朱爱华3,张苏珍4 | 1.江苏海洋大学 环境与化学工程学院,江苏 连云港 222005;2.江苏海洋大学 药学院,江苏 连云港 222005;3.江苏省东辛农场水产养殖公司,江苏 连云港 222000;4.连云港市畜产品质量监督检验测试中心,江苏 连云港 222000 |
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