EXTRACTION OF TETRABUTYLAMMONIUM TETRACHLOROAURATE(3) INTO CHLOROFORM SOLUTION OF TETRABUTYLAMMONIUM PERCHLORATE AND SPECTROPHOTOMETRIC DETERMINATION OF GOLD

被引：11

作者：

BRAVO, O

IWAMOTO, RT

机构：

[1] Department of Chemistry, University of Kansas, Lawrence, Kan

来源：

ANALYTICA CHIMICA ACTA | 1969年 / 47卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0003-2670(01)95670-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The distribution equilibrium: AuCl4-+(Bu4N+, ClO4-)HCCl3 ⇌ (Bu4N+, AuCl4-)HCCl3+C1O4-, has been examined. With acidic aqueous chloride solutions in which -log ([H+] [Cl-]) 1 2 is greater than 2, the apparent equilibrium constant, KA, is a constant equal to the equilibrium constant of the distribution reaction above; a value of 2.88·103 was obtained. Combination of the extraction with a direct spectrophotometric determination of AuCl4- in chloroform at 312 nm provides a simple, rapid, and accurate analytical method for the separation and determining of gold in the μg-range. © 1969.

引用

页码：209 / &