摘要
提出了用络合滴定法测定混合金属离子．以汞膜电极为指示电极，银－氯化银电极为参比电极，以标准ＥＤＴＡ溶液滴定混合金属离子溶液．采集一系列指定电位点处滴定剂的体积，并以主成分回归法处理滴定数据．利用本文方法对铜、锌、铅、钴混合溶液进行了测定，结果满意．
A new method of complexometric titration for determination of mixed metal ions with principal component regression(PCR) was developed. The principle of this method was described and the linear complexometric titration equation was derived. In this work, a mercury film electrode(MFE) was used as the indicator electrode for potentiometric measurements, and a double junction Ag/AgCl electrode as the reference electrode. The mixtures of metal ions were titrated with ethylenediamine teraacetic acid(EDTA), the potentiometric titration data were recorded at each selected potential points and were then treated by chemometric approach of PCR. A set of synthetic mixtures of lead, copper, zinc and cobalt with concentration levels from 0.5 mmol/L to 1.5 mmol/L were analyzed by the proposed method and acceptable results were obtained.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第3期359-362,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
江西省自然科学基金
关键词
金属
配合滴定
多组分
铜
锌
钴
铅
混和溶液
Complexometric titration, Metal ions, Mercury film electrode, Principal component regression
