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前言离子选择电极是以电位法选择性地测定溶液中特定离子活度的指示电极。这一电极型传感器的新工具用于实践中,常常具有以下优越性:不需处理破坏样品溶液即可用于现场测量;能满意地测量许多其他分析方法难以测量的离子(如F~-、NO_3~-、ClO_4~-);灵敏度较高,对于某些离子能测量1ppb上下;测定离子与干扰离子的选择比(K_(ik))多在10~2—10~5而不需进行化学分离;能连续、快速地直接测定或用作电位滴定的指示电极,
Introduction Ion-selective electrode is the potential method of selective determination of the activity of specific ions in the indicator electrode. The new tools for this electrode-type sensor are often used in practice and often have the advantage of being able to be used for on-site measurements without the need to disrupt the sample solution and to satisfactorily measure ions that are difficult to measure with many other analytical methods (eg F ~ -, NO_3 ~ -, ClO_4 ~ -); high sensitivity, for some ions can measure 1ppb up and down; determination of ion and interfering ion selectivity ratio (K ik) more in the 10 ~ 2-10 ~ 5 without the need for chemical separation ; Can be measured continuously or quickly directly or as a potential titration indicator electrode,