一、前言电解液中氯离子对金属离子的阴极还原过程和阳极钝化作用都有较大的影响。故在电解液中,氯离子含量的分析具有重要的实际意义。但长期以来,一直采用经典的硝酸银容量法。在复合镀Co—SiC电解液中,由于含有大量红色钴(Ⅱ)离子,以致使滴定终点观察不清,造成较大的滴定误差。为此,曾采用离子交换法除去钴(Ⅱ)的干扰,虽滴定终点清晰,但测定费时。离子选择电极是近年来迅速发展起来的一种新的电化分析工 First, the preface Electrolyte chloride ion on the metal ion cathode reduction process and anode passivation have a greater impact. Therefore, in the electrolyte, the analysis of chloride ion content has important practical significance. But for a long time, the classic silver nitrate volumetric method has been used. In the composite plating Co-SiC electrolyte, due to the presence of a large amount of red cobalt (II) ions, so that the end point of the titration is not clear, resulting in greater titration error. To this end, ion exchange has been used to remove cobalt (II) interference, although the end of titration clear, but the determination of time-consuming. Ion selective electrode is a new electrochemical analyst developed rapidly in recent years