Investigation of the Reaction of Gold(III) with 2-[2-(4-Dimethylamino-phenyl)-vinyl]-1,3,3-trimethyl-3H-indolium. Application for Determination of Gold

被引：3

作者：

Serbin, Rastislav ^{[2
]}

Bazel, Yaroslav R. ^{[2
]}

Torok, Marcel ^{[2
]}

Havel, Josef ^{[3
]}

Balogh, Ioseph S. ^{[4
]}

Kormosh, Zholt O. ^{[1
]}

Holeczyova, Gabriela ^{[2
]}

Andruch, Vasil ^{[2
]}

机构：

[1] Volyn Natl Univ, Dept Analyt Chem, UA-43025 Lutsk, Ukraine

[2] PJ Safarik Univ Kosice, Dept Analyt Chem, SK-04154 Kosice, Slovakia

[3] Masaryk Univ, Dept Chem, CZ-61137 Brno, Czech Republic

[4] Coll Nyiregyhaza, Dept Chem, H-4400 Nyiregyhaza, Hungary

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2009年 / 56卷 / 06期

关键词：

2-[2-(4-Dimethylamino-phenyl)-vinyl]-1,3,3-trimethyl-3H-indolium; Gold; Spectrophotometry; SOLID-PHASE EXTRACTION; PLATINUM-GROUP ELEMENTS; SPECTROPHOTOMETRIC DETERMINATION; TRACE AMOUNTS; SPECTROMETRY; PALLADIUM; WATER; PRECONCENTRATION; HYDROCHLORIDE; SILVER;

D O I：

10.1002/jccs.200900168

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new, simple, rapid, sensitive, efficient and low-cost spectrophotometric procedure for the determination of gold was developed. The method is based on the reaction of [AuCl4](-) with 2-[2-(4-dimethylaminophenyl)-vinyl]-1,3,3-trimethyl-3H-indolium reagent to form a colored ion associate extractable by various organic solvents. The molar absorptivity of the ion associates is in the range (5.7-9.2) x 10(4) L mol(-1) cm(-1) depending on the extractant. Butyl acetate was chosen as the extractant. The optimum reaction conditions were established: pH 2-4, concentration of the dye reagent (0.8-1.5) x 10(-4) mol L-1. The determination of gold is not hindered even by a 1000-fold concentration of Ni and Co; a 500-fold concentration of Pb and Zn; a 100-fold concentration of Bi, Cu, Cd, Pt, Rh and Ru; or a 20-fold concentration of Ag. The established method was applied to the determination of gold in model samples and enriched polymetallic ores.

引用

页码：1168 / 1174

页数：7

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