镀液中游离焦磷酸钾含量的自动电位滴定

Determination of the free Potassium Pyrophosphate in Plating Bath by Automatic Potentiometeric Titration

研究了用自动电位滴定法测定镀液中游离焦磷酸钾的条件和方法。实验结果表明,在15%-30%的乙醇介质中,用醋酸钙溶液作滴定剂,以钙离子选择性电极为指示电极,以212型双液接电极为参比电极,来测定焦磷酸钾,具有较高的分析准确度和精密度,且方法简便快捷,在3 m in内能打印出分析结果。

This paper had studied on conditions and method of the free potassiurn pyrophosphate determination in plating bath by automatic potentiometeric titration.Test show that this method raise analytical accuracy and precision,this method is simple and fast,and cuts result in 7 min.