CAJ | 학술논문

本实验以salophen为功能单体,Th（Ⅳ）离子为模板离子,乙二醇二甲基丙烯酸酯（EGDMA）作交联剂,用偶氮二异丁腈（AIBN）作引发剂在烯基化的磁性Fe3O4粒子表面上热聚合制备磁性印迹材料.探讨此印迹材料对钍（Ⅳ）的最佳吸附条件.结果表明：此磁性印迹材料在pH为4.5,在70μg/mL钍（Ⅳ）中吸附30 min可以到达最大吸附容量42.54μg/mg.Th（Ⅳ）印迹材料相对U（Ⅵ）,La（Ⅲ）和Ce（Ⅲ）的相对选择性系数分别是62.4,82.2和93.1,说明此材料可以在La（Ⅲ）,Ce（Ⅲ）和U（Ⅳ）的存在下检测Th（Ⅳ）.
본실험이salophen위공능단체,Th（Ⅳ）리자위모판리자,을이순이갑기병희산지（EGDMA）작교련제,용우담이이정정（AIBN）작인발제재희기화적자성Fe3O4입자표면상열취합제비자성인적재료.탐토차인적재료대토（Ⅳ）적최가흡부조건.결과표명：차자성인적재료재pH위4.5,재70μg/mL토（Ⅳ）중흡부30 min가이도체최대흡부용량42.54μg/mg.Th（Ⅳ）인적재료상대U（Ⅵ）,La（Ⅲ）화Ce（Ⅲ）적상대선택성계수분별시62.4,82.2화93.1,설명차재료가이재La（Ⅲ）,Ce（Ⅲ）화U（Ⅳ）적존재하검측Th（Ⅳ）.
In the paper, the magnetic imprinting material was synthesized by surface im- printing technology on the surface of vinyl-functional magnetic Fe304 particles, with salo- phen as functional monomer, Th （Ⅳ） ion as template, ethylene glycol dimethacrylate （EGDMA） as the cross-linking and azodiisobutyronitrile （AIBN） as the initiator. The opti- mum conditions for absorption of Th （ Ⅳ） ion on the magnetic imprinting material were dis- cussed. The results show that the maximum absorption capacity of imprinting material is 42.54μg,/mg when the initial concentration is 70 p,g/mL in 30min contact time at pH 4.5. the relative selectivity coefficient values of the synthesized adsorbent for Th（ Ⅳ ）/La （Ⅲ ）, Th （Ⅳ ）/Ce （ Ⅲ ）, and Th （ Ⅳ）/U （ Ⅵ） were 82.2,93.1 and 62.4 times greater than that of the non-imprinted matrix, respectively. It suggests that Th （ Ⅳ ） ion could be detection using the magnetic Th （Ⅳ）-imprinted polymer in the present of La （Ⅲ）,ce（Ⅲ） and U（Ⅳ）.