中文摘要：本研究中，采用改良的沉淀聚合法，可控合成了一种单分散、界限分明的核-壳磁性分子印迹聚合物(MD-CSMMIP)，并用作同时检测水稻样品中六种微量霉菌毒素的磁性固相萃取吸附剂。研究表明，在最佳条件下，该方法对六种霉菌毒素的检测限(LOQs)范围为0.003 mg/kg-0.01 mg/kg；并以86.3-103.1%的回收率，成功检测了水稻样品中的霉菌毒素。
外文摘要：In this paper, a monodisperse, well-defined core-shell magnetic molecularly-imprinted polymer (MD-CSMMIP) was controllably synthesized via modified precipitation polymerization and used as a magnetic solidphase extraction adsorbent for the simultaneous determination of six trace mycotoxins in rice samples. The as-prepared MD-CS-MMIP was fully characterized by SEM, TEM, XRD, and TG-DTG. This study is particularly concerned with the influence of the amount of oleic acid used for MD-CS-MMIP synthesis on the material morphology, components, and adsorption efficiency. The results reveal that the modification of oleic acid on the Fe3O4 surface could improve the monodispersion of core-shell MD-CS-MMIP. Moreover, MD-CS-MMIP was used as a magnetic solid-phase extraction adsorbent for the determination of six mycotoxin residues in rice samples, and the adsorption and desorption conditions of MD-CS-MMIP toward mycotoxins were optimized to obtain the highest adsorption capacity, selectivity, and desorption efficiency. Under optimal conditions, the limits of quantitation (LOQs) of the developed method toward the six mycotoxins range from 0.003 mg kg(-1) to 0.01 mg kg(-1). The developed method was successfully used for the determination of mycotoxins in rice samples, with recoveries in the range of 86.3 to 103.1%.
作者： Pan, SD；Ye, MJ；Gao, GS；He, Q；Wang, L；Chen, XH；Qiu, QL；Jin, MC；AF Pan, Sheng-Dong；Ye, Mei-Jun；Gao, Guo-Sheng；He, Qian
作者单位：Ningbo Municipal Ctr Dis Control & Prevent
期刊名称：ANALYTICAL METHODS
期刊影响因子：1.915
出版年份：2017
出版刊次：36
点击下载：合成单分散核-壳结构的磁性分子印迹聚合物，用于LC-MS/MS快速灵敏地检测水稻中霉菌毒素残留