A Novel Tetraiodocadmate（Ⅱ） - PVC Membrane Electrode for the Potentiometric Determination of Cadmium（Ⅱ）

作     者：Fu Chang WANG Ya Qin CHAI Ruo YUAN 

作者机构：Chongqing Key Laboratory of Analytical Chemistry College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2006年第17卷第7期

页      面：941-944页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Thanks for the financial support of the Natural Science Foundation of Chongqing City (No. CSTC-2005 BB4100) the Southwest University Foundation (XSGX02) for the present work 

主　　题：Tetraiodocadmate(Ⅱ) ion pair membrane electrode. 

摘      要：A novel tetraiodocadmate（Ⅱ）-selective membrane electrode consisting of tetraiodo-cadmate（Ⅱ）-rhodamin B ion pair （TICRhB） dispersed in a PVC matrix plasticized with 2-nitrophenyl octyl ether （o-NPOE） was prepared. The sensor demonstrated a near-Nernstian response for 1×10^-2 to 2×10^-6 mol/L cadmium （Ⅱ） at 25℃ with an anionic slope of 29.0. It revealed very good selectivity for Cd^2＋ with negligible interference from many cations and anions, and could be used in a pH range of 3 to 6.