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离子印迹传感器选择性检测甲基汞离子
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作者单位
付坤,高云玲,姚克俭 浙江工业大学化学工程与材料学院绿色合成技术国家重点实验室培育基地 
基金项目:国家自然科学基金资助项目(20807037);浙江省自然科学基金资助项目(LY12B07010)
中文摘要: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3.5×10-7mol/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%。
中文关键词:甲基汞离子  8-巯基喹啉  分子印迹技术  荧光传感器
 
Selective Determination of Methylmercury Ion in Aqueous Media with Molecularly Imprinted Polymer Fluorescent Sensor
Abstract:The molecularly imprinted polymers were synthesized with CH3Hg+ as a template,4-vinylpyridine 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%.
Key Words:methylmercury ion  8-mercaptoquinoline  molecular imprinting technology  fluorescence sensor
引用本文:付坤,高云玲,姚克俭.离子印迹传感器选择性检测甲基汞离子[J].分析测试学报,2012,31(8):1001-1004.
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