摘要
将多元校正分析法应用于配位滴定中,以EDTA为滴定剂,玻璃电极为指示电极,饱和甘汞电极为参比电极。依据电位滴定原理,对混合三组分:Cu ̄(2+)、Cd ̄(2+)、Zn ̄(2+)、及Cu ̄(2+)、CO ̄(2+)、Ni ̄(2+)进行测定,各金属离子之间的△logK在0.04~2.34之间,计算误差一般小于土10%。
A methog of multicomponent determination of metal ions in complextitration has been studied.Three elments, Cu(Ⅱ),Cd(Ⅱ) and Zn(Ⅱ),with their△logK between 0.04~2.3,have been simultaneously determined.The calculation error isless than士10%.
关键词
配位滴定
金属离子
浓度
complex titration,multivariation calibration,metal ion concentration