电聚合金属席夫碱配合物修饰电极作为碘离子电位型传感器的研究  

Iodide Ion Sensors Based on Chemically,Modified Electrodes with Electropolymerized Metal- N,N'-Bis(salicyliden)-Ethane-1,2-Diamine(salen)

作　　者：徐明[1] 刘国东[2] 沈国励 俞汝勤 

机构地区：[1]湖南师范大学化学化工学院,长沙410081 [2]湖南大学化学化工学院化学计量学与化学传感技术研究所,长沙410082

出　　处：《化学传感器》2000年第4期14-17,共4页Chemical Sensors

摘　　要：本文研究了电聚合金属席夫碱配合物修饰电极对碘离子的选择性响应。Co—salen聚合膜电极对碘离子具有良好的电位响应,响应斜率为—72.5mV/dec,线性范围为2.0×10^(-6)—1.0×10^(-1)mol/L,探讨了聚合膜厚度,pH值对电极性能的影响,同时对电极的响应机理作了进一步的探讨。Potentiometric sensors for iodide ion based on Cu -salen,Co-salen,Mn-salen and Ni-salen film coated glassy carbon electrodes were prepared by electropolymerization method. The Co - salen film electrode showed a slope of - 72. 5mV/dec and a super -Nernst ion potentiometric response to iodide ions over the range of 2×10-6-1.0×10-1 mol/L. The effect of pH,film thickness and the response mechanism are discussed. The electrodes were applied in the determination of iodine in injection preparations.

关 键 词：电聚合 金属席夫碱 碘离子 电位型 传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]