以甲基汞离子为模板,8-巯基喹啉为荧光单体,4-乙烯基吡啶为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,在二甲基亚砜溶剂中,以聚偏氟乙烯(PVDF)膜为支撑介质,65℃热引发聚合得到甲基汞离子荧光印迹膜.该荧光印迹膜对甲基汞离子表现出良好的选择性,最佳吸附pH值为7.0,检出限为3.5×10-7 mol/L.将其作为吸附材料,应用于河水中甲基汞离子的分离和富集,结果表明,该传感器对甲基汞离子具有良好的选择性和特异性吸附,回收率达93％～104％.%The molecularly imprinted polymers were synthesized with CH3Hg+ as a template, 4-vi-nylpyridine as a functional monomer. 8-Mercaptoquinoline was used as both a complex-forming agent and a fluorescence tag. The free-radical polymerization was performed within PVDF films and was initiated by 4, 4'-azobisisobutyronitrile at 65 ℃ in dimethyl sulfoxide. The polymer showed a high selectivity for methylmercury ion. The optimum pH value was at 7. 0. The detection limit for the method was up to 3. 5 ×10-7mol/L. The polymer was applied in the determination of methylmercury ions in real water samples. The method showed a high selectivity against other metal ions and the recoveries for methylmercury ions were in the range of 93% -104% .
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