交流示波极谱滴定法测定铈  

DETERMINATION OF CERIUM BY AC OSCILLOPOLAROGRAPHIC TITRATION

作　　者：屈建莹[1] 陈尉平 刘快之[1] 

机构地区：[1]河南大学化学系,开封475001

出　　处：《理化检验（化学分册）》2000年第6期250-251,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：利用 Cu( )在交流示波极谱曲线上有敏锐的切口并可指示交流示波极谱滴定终点的性质 ,提出用 EDTA络合 Ce( ) ,并用 Cu( )标准溶液回滴剩余的 EDTA从而测定铈的方法。结果表明 ,该法简便、快速、干扰较少。It is found that a sensitive and sharp cut is shown on the AC oscillopolarogram at the end point of titration of EDTA with standard copper(Ⅱ) solution. Based on this phenomenon a method for the determination of Ce(Ⅳ) is established by back titration of the excess EDTA from the reaction of EDTA with cerium(Ⅳ). This method is simple and rapid.

关 键 词：铈 EDTA 铜离子 交流示波极谱 

分 类 号：O614.332[理学—无机化学] O657.14[理学—化学]