氯化四苯砷用于电流滴定法测定六氟磷酸根离子

THE APPLICATION OF TETRAPHENYLARSONIUM CHLORIDE IN THE DETERMINATION OF HEXAFLUOROPHSPHATE ION BY AMPEROMETRIC TITRATION

中文关键词:  氯化四苯砷,电流滴定,六氟磷酸根离子

英文关键词:Tetraphenylarsonium chloride, Amperometric titration hexafluophosphate ion,

中文摘要:

      研究了用氯化四苯砷作指示剂，通过电流滴定法测定六氟磷酸根离子的方法。电流滴定法滴定六氟磷酸锂溶液，测定结果与用 Ｎｉｔｒｏｎ（硝酸灵）沉淀法的结果相一致，并且没有来自氯化物的干扰。本法具有快速、准确、经济等优点。

英文摘要:

      A method for the determination of hexafluorophosphate ion by amperometric titration has been studied.Tetraphenylarsonium ion is used as the indicating ion.The paper also reports the relevant polarographic data on the arsonium ion.The method was tested for the titration of lithium hexafluorophosphate solution. The results were compared with another analytical method called nitron precipitation and they accord with well each other.The titration was not interfered by fluoride. This method has the advantages of quickness and precision.\;