新型钴配合物为中性载体的高选择性碘离子电极的研究  

Study on highly selective iodide-electrode based on new complexes of cobalt(Ⅱ) as neutral carriers

作　　者：刘艳[1] 徐岚[2] 吴兴发[1] 余维亚[1] 

机构地区：[1]重庆涪陵师范学院化学系,重庆涪陵408000 [2]西南师范大学化学化工学院,重庆北碚400715

出　　处：《分析试验室》2005年第3期19-22,共4页Chinese Journal of Analysis Laboratory

基　　金：重庆市教委资助项目(021302)

摘　　要：首次报道了基于2,4 二羟基苯甲醛缩二亚丙基三胺合钴(Ⅱ)为载体的溶剂聚合膜阴离子敏感电极,该电极对碘离子(I-)具有高的电位选择性和灵敏度,且呈现反Hofmeister选择性行为。采用交流阻抗及光谱分析技术研究了电极的响应机理,并将电极用于实际样品分析。An anion-selective electrode based on 2,4-dihydroxybenzaldehyde-diaminodipropylamine (cobalt(Ⅱ)) metallic complex as a neutral carrier is reported. The sensor exhibits unique selectivity and high sensitivity toward iodide, which displays an anti-Hofmeister selectivity pattern. The response mechanism is discussed based on the AC impedance technique and the UV spectroscopy technique. The electrode can be applied to food analysis and the result is in fair agreement with the result given by spectrophotometry.

关 键 词：中性载体 碘离子 2 4-二羟基苯甲醛缩二亚丙基三胺合钴(Ⅱ) 

分 类 号：O657.1[理学—分析化学]