A simple spectrophotometric method for determination of gold (III) in aqueous samples

被引：23

作者：

Fazli, Yousef ^{[2
]}

Hassan, Jalal ^{[1
]}

Karbasi, Mohamad-Hadi ^{[1
]}

Sarkouhi, Masomeh ^{[3
]}

机构：

[1] Minist Ind & Mineral, Iranian Mineral Proc Res Ctr, Karaj, Iran

[2] Islamic Azad Univ, Fac Sci, Dept Chem, Arak, Iran

[3] Tarbiat Modares Univ, Dept Chem, Tehran, Iran

来源：

MINERALS ENGINEERING | 2009年 / 22卷 / 02期

关键词：

Gold; UV-vis; TMBH; Water; SEPARATION; RESIN;

D O I：

10.1016/j.mineng.2008.05.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A simple method for rapid determination of trace Au in natural water was presented by using UV-vis spectrophotometry after reaction of gold (III) with 3,3', 5,5'-tetramethylbenzidine hydrochloride (TMBH) in acidic solution. Under the optimum conditions, in a concentration range of 100-2000 mu g L(-1) of Au (III) a good linear calibration graph was obtained (r = 0.9969, n = 7). The percent relative standard deviation (RSD) for determination of 1000 mu g L(-1) Au was 10% (n = 3) and limit of detection based on a signal-tonoise ratio (S/N) of 3 (3S(bl)) was 50 mu g L(-1). The proposed method has been successfully applied to the determination of gold spiked and real aqueous samples. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：210 / 212

页数：3

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