电位法测定异价阳离子通过阳离子交换膜时的选择透过性

Potentiometric Determination of Permselectivity for Cations With Different Valence through a Cation Exchange Membrane

从理论上导出了不等价的两种阳离子在通过阳离子交换膜时的选择透过性与膜电位的关系，并用电位法对一些不等价阳离子组合在两种商品膜中的选择透过性进行了测定。 本方法测定结果与电渗析实际分离效果相符。

This paper theoretically correlated the membrane potential with the permselectiv- ity, P12, for two kinds of cations with different valence. The P12 values of various combination systems of cation 1 and 2 (with 1 to 3 valence) were determined through two kinds of com- mercial membranes. The results were in good agreement with those of actt1al separation effi- ciency by electrodialysis.