A Comparative Study of 8-Hydroxyquinoline and 8-Hydroxyquinoline-5-sulfonic Acid for Antimony(III) Determination by AdSV. Substituent Effect on Sensitivity II

被引：7

作者：

Rojas-Romo, Carlos ^{[1
]}

Arancibia, Veronica ^{[1
]}

机构：

[1] Pontificia Univ Catolica Chile, Fac Quim, Santiago 7820436, Chile

来源：

ELECTROANALYSIS | 2015年 / 27卷 / 05期

关键词：

Antimony; 8-Hydroxyquinoline-5-sulfonic acid; 8-Hydroxyquinoline; Adsorptive stripping voltammetry; ADSORPTIVE STRIPPING VOLTAMMETRY; WATER; TRACE; ALUMINUM; SAMPLES; METALS; OXINE;

D O I：

10.1002/elan.201400616

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sensitive and selective method for the determination of Sb3+ based on the formation of its complexes with 8-hydroxyquinoline (HQ) and 8-hydroxyquinoline-5-sulfonic acid (HQS) is proposed. The best analytical conditions are: pH 5.4 and 2.2 for HQ and HQS, respectively; C-HQ from 15.0 to 25.0 molL(-1) and C-HQS from 70.0 to 200.0 mu molL(-1). The detection limits are 100.0 and 14.0 ngL(-1) (t(acc) = 30 s) for Sb3+ with HQ and HQS, re-spectively. The method using HQS as ligand has a 2.2-fold higher sensitivity than that with HQ and the former was chosen for Sb3+ determination.

引用

页码：1262 / 1267

页数：6

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