缬氨霉素铷离子选择电极的制备和应用  

Construction and Application of Valinomycin Rubidium Ion Electrodes

作　　者：王波[1] 钱国英[1] 吴国梁[1] 

机构地区：[1]中国科学院青海盐湖研究所西安二部,陕西西安710043

出　　处：《盐湖研究》2006年第1期43-45,共3页Journal of Salt Lake Research

摘　　要：缬氨霉素为中性载体的PVC膜铷离子选择电极有较好的选择性,KpRotb,K=0.35。该电极已用于铷的分析测定和含Rb+的水和醇水体系的热力学性质的研究。PVC membrane rubidium ion electrodes with valinomycin as neutral ionophore was prepared and its selective coefficient KRb^pot,K = 0.35. Determination of rubidium in some aqueous samples by the potentiometric method, known dilutionstandard addition and potentiometric precipitation titration has been developed. The activity coefficients for RbCl and Rb2SO4 aqueous and nonaqueous（MeOH ＋ H2O）mixtures were determined by electromotive force measurements with the electrodes.

关 键 词：铷离子选择电极 缬氨霉素 铷的测定 

分 类 号：O657[理学—分析化学]