Chemical Speciation of Antimony(III and V) in Water by Adsorptive Cathodic Stripping Voltammetry Using the 4-(2-Thiazolylazo) - Resorcinol

被引：15
作者：
El-Shahawi, M. S. [1 ,3 ]
Bashammakh, A. S. [1 ]
Al-Sibaai, A. A. [1 ]
Bahaffi, S. O. [1 ]
Al-Gohani, E. H. [2 ]
机构：
[1] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia
[2] Omm Al Qura Univ, Fac Sci Appl, Dept Chem, Mecca, Saudi Arabia
[3] Mansoura Univ, Dept Chem, Fac Sci Damiatta, Mansoura, Egypt
来源：
ELECTROANALYSIS | 2011年 / 23卷 / 03期
关键词：
Antimony(III; V); 4-(2-Thiazolylazo)-resorcinol; Cathodic stripping voltammetry; Speciation; Certified reference material (IAEA Soil-7); Red sea water; Wastewater; TRACE; SB; SPECTROMETRY; ENRICHMENT; STABILITY; SELENIUM; SITE; SOIL; CU;
D O I：
10.1002/elan.201000505
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple adsorptive cathodic stripping voltammetry method has been developed for antimony (III and V) speciation using 4-(2-thiazolylazo) - resorcinol (TAR). The methodology involves controlled preconcentration at pH 5, during which antimony(III) - TAR complex is adsorbed onto a hanging mercury drop electrode followed by measuring the cathodic peak current (I-p,I-c) at -0.39 V versus Ag/AgCl electrode. The plot of I-p,I-c versus antimony(III) concentration was linear in the range 1.35 x 10(-9)-9.53 x 10(-8) mol L-1. The LOD and LOQ for Sb(III) were found 4.06 x 10(-10) and 1.35 x 10(-9) mol L-1, respectively. Antimony(V) species after reduction to antimony(III) with Na2SO3 were also determined. Analysis of antimony in environment water samples was applied satisfactorily.
引用
收藏
页码：747 / 754
页数：8
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