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一、引言离子选择性电极是近年来所发展起来的一种分析工具,它能够快速、简便地测定溶液中若干离子的活度。它的灵敏度可以低于1ppb,因此,它已广泛地用于海洋、土壤、地质、化工、医学等各个领域中。离子选择性电极的重要问题是选择性的问题,近年来有不少文章对选择性和响应机理作了理论上的探讨,现将这些文章予以总结。二、电极的选择性离子选择性电极作为分析的—工具,主要是通过离子选择性电极作指示电极与另一参比电极组成—电池。通过测定电池的电功势,可得出溶液中离子的活度,但是并不是所有的电
I. Introduction Ion selective electrode is an analytical tool developed in recent years, it can quickly and easily determine the activity of several ions in solution. Its sensitivity can be less than 1ppb, therefore, it has been widely used in marine, soil, geology, chemical, medical and other fields. Ion selective electrode is an important issue is the issue of selectivity, in recent years, many articles on the selectivity and response mechanism for a theoretical discussion, these articles are summarized. Second, the electrode selectivity Ion selective electrode as the analysis - tool, mainly through the ion selective electrode as the indicator electrode and another reference electrode - the battery. By measuring the battery’s electrical potential, the activity of the ions in the solution can be drawn, but not all of the electricity