SIMULTANEOUS DETERMINATION OF TOTAL AND FREE METAL-ION CONCENTRATION IN SOLUTION BY SORPTION ON IMINODIACETATE RESIN

被引：38
|
作者：
PESAVENTO, M
BIESUZ, R
机构：
[1] Dipartimento di Chimica Generate, University di Pavia, Pavia, Viale Taramelli
来源：
ANALYTICAL CHEMISTRY | 1995年 / 67卷 / 19期
关键词：
D O I：
10.1021/ac00115a027
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A method for determining the total concentration of a metal ion originally present in a solution (c(tot)) and the ratio of total to free metal ion (Z(M)) is proposed. It consists of putting different aliquots of the sample (V) in contact with the resin (re) in batch, by keeping the acidity constant, and determining the concentration of the sorbed metal ion c. Then 1/c is plotted against V/w, and c(tot) and Z(M) are calculated from the straight line obtained. The chemical model that allows evaluation of the ratio of total to free metal ion is illustrated and discussed. Some synthetic systems are examined to demonstrate the validity of the procedure.
引用
收藏
页码：3558 / 3563
页数：6
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