中文摘要：磁性分子印迹聚合物(MMIPs)，将突出的磁性与目标分子的特异选择性结合能力结合起来，已证明在分离科学和生物应用中独具吸引力。本研究提出核壳磁性分子印迹聚合物用于食品分析，以共沉淀法制备的Fe3O4颗粒为磁芯，磁性分子印迹聚合物膜在二氧化硅层上作为目标物质的识别和吸附。研究表明，在最佳条件下，所制备的Fe3O4@MIPs表现出快速的吸附平衡、大幅提高的印迹能力以及对目标杂色曲霉素（ST）优良的特异性，已被成功地用作高效固相萃取材料，随后进行高效液相色谱分析。
外文摘要：Magnetic molecularly imprinted polymers (MMIPs), combination of outstanding magnetism with specific selective binding capability for target molecules, have proven to be attractive in separation science and bio-applications. Herein, we proposed the core–shell magnetic molecularly imprinted polymers for food analysis, employing the Fe3O4 particles prepared by co-precipitation protocol as the magnetic core and MMIP film onto the silica layer as the recognition and adsorption of target analytes. The obtained MMIPs materials have been fully characterized by scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR), vibrating sample magnetometer (VSM), and re-binding experiments. Under the optimal conditions, the fabricated Fe3O4@MIPs demonstrated fast adsorption equilibrium, a highly improved imprinting capacity, and excellent specificity to target sterigmatocystin (ST), which have been successfully applied as highly efficient solid-phase extraction materials followed by high-performance liquid chromatography (HPLC) analysis. The MMIP-based solid phase extraction (SPE) method gave linear response in the range of 0.05–5.0 mg·L−1 with a detection limit of 9.1 µg·L−1. Finally, the proposed method was used for the selective isolation and enrichment of ST in food samples with recoveries in the range 80.6–88.7% and the relative standard deviation (RSD) <5.6%.
外文关键词：sterigmatocystin；molecularly imprinted polymers；magnetic nanoparticles；solid-phase extraction；HPLC
作者：Liu, JM；Wei, SY；Liu, HL；Fang, GZ；Wang, S
作者单位：BTBU
期刊名称：POLYMERS
期刊影响因子：2.944
出版年份：2017
出版刊次：10
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