Square-wave stripping voltammetry of uranium(VI) at the glassy carbon electrode. Application to some industrial samples

被引：0
|
作者：
El-Maali, NA [1 ]
Abd El-Hady, D [1 ]
机构：
[1] Assiut Univ, Fac Sci, Dept Chem, Assiut 71516, Egypt
来源：
ELECTROANALYSIS | 1999年 / 11卷 / 03期
关键词：
Osteryoung square-wave stripping voltammetry; uranium(VI); glassy carbon electrode; HEPES;
D O I：
10.1002/(SICI)1521-4109(199903)11:3<201::AID-ELAN201>3.0.CO;2-N
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new method for trace uranium, based on the adsorptive accumulation of the chelate compound formed between U(V1) and [4-(2-hydroxyethyl)-1-piprazine ethane sulfonic acid] on glassy carbon electrode is described. The optimum conditions for the complex formation were: 0.02 M HClO4, pH 4.0, accumulation potential + 0.1 V (vs. Ag/AgCl), frequency 15 Hz and SW amplitude 25 mV. Under these conditions, it was easy to determine the metal ion in a concentration range as low as 1 x 10(-9) M. The effect of possible interfering metal ions, e.g., Cu(II), Fe(III), Al(III), Mg(II), etc. has been tested. Application of the method for the determination of the metal ion in some industrial samples has been successfully done.
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页码：201 / 206
页数：6
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