一种计算液接电势的新方法  

New Method to Calculate Liquid Junction Potentials

作　　者：赵英国 方晖 郭畅 ZHAO Ying-Guo;FANG Hui;GUO Chang(Anhui Key Laboratory of Functional Coordination Compounds,Anqing Normal University,Anqing 246011,China)

机构地区：[1]安庆师范大学安徽省功能配合物重点实验室,安徽安庆246011

出　　处：《化学教育（中英文）》2021年第16期97-100,共4页Chinese Journal of Chemical Education

基　　金：安徽省高等学校省级示范基层教学组织(物理化学教研室,序号263);安徽省高等学校省级教学示范课(物理化学(含物理化学实验),序号1554)。

摘　　要：依据液接电势达稳态时通过边界层的净电荷为零这一思想,提出了一种计算液接电势的新方法。对于3类液接电势的计算,特别是Lewis-Sargent公式与Henderson方程的推导,思路清晰易懂,避免了过往液接电势计算方法存在的一些问题。本文所提出的方法能够为液接电势相关内容的教学提供借鉴。A new method for the calculation of liquid junction potentials has been proposed according to the idea that the net charge across the liquid junction is zero when the liquid junction potential is in steady state. Calculations of three kinds of liquid junction potentials, especially for the derivation of the Lewis-Sargent formula and the Henderson equation, are clear and understandable, and problems existing in the previous methods for the calculation of liquid junction potentials are avoided. The method proposed herein can provide a reference for teaching related to liquid junction potentials.

关 键 词：液接电势 计算方法 Lewis-Sargent公式 Henderson方程 

分 类 号：O646.22-4[理学—物理化学] G642[理学—化学]