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一、引言离子选择电极是一种根据物理化学原理直接测量化学组分的新工具,也可用这样定义:离子选择电极是一种以电位法来测量溶液中某一特殊离子活度的指示电极。最早的pH玻璃电极就是离子选择电极的一种。我们知道溶液是有生命活力的有机体构成中的一部分,而且又是布满地球表面非常辽阔,所以这一工具的出世,对溶液化学的影响甚大,有人把它与光学上的激光相比(1)。离子选择电极对其他技术难以测量的离子,例如Na~+、K~+、Ca~(2+)、F~-、So_4~(2-)、S~(2-)、No_3~-、Clo_4~-等,具有特别效
I. INTRODUCTION Ion-selective electrodes are a new tool for directly measuring chemical components based on physico-chemical principles. They can also be defined as follows: An ion-selective electrode is an indicator electrode that uses potentiometry to measure the activity of a particular ion in a solution. The earliest pH glass electrode is a kind of ion selective electrode. We know that the solution is part of a viable organism and that it is a very large surface covered by the Earth, so the advent of this tool has had a great effect on solution chemistry, compared to optical lasers (1 ). Ion selective electrodes can not detect ions that are difficult to measure by other techniques such as Na ~ +, K ~ +, Ca ~ (2 +), F ~ -, So_4 ~ (2 ~), S ~ (2 -), No_3 ~, Clo_4 ~ -, etc., with special effects