Application of Square Wave Anodic Stripping Voltammetry for Determination of Traces of Ti(I) at Carbon Electrodes In Situ Modified with Bi Films

被引：8
作者：
Caldeira, Alexandra [1 ]
Gouveia-Caridade, Carla [1 ]
Pauliukaite, Rasa
Brett, Christopher M. A. [1 ]
机构：
[1] Univ Coimbra, Fac Ciencias & Tecnol, Dept Quim, P-3004535 Coimbra, Portugal
来源：
ELECTROANALYSIS | 2011年 / 23卷 / 06期
关键词：
Bismuth film; Carbon film electrodes; Trace metal determination; Stripping voltammetry; Electrochemical impedance spectroscopy; ELECTROCHEMICAL IMPEDANCE; BISMUTH ELECTRODES; GRAPHITE ELECTRODE; MERCURY-FILM; ELECTROANALYSIS; POTENTIALITIES; THALLIUM; CD(II); PB(II); LEAD;
D O I：
10.1002/elan.201100018
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Bismuth films deposited in situ at glassy carbon and carbon film electrodes were tested for the determination of traces of Tl(I) separately and together with Zn(II) and Pb(II), in acetate buffer solution pH 3.7, using square wave anodic stripping voltammetry. Electrochemical impedance spectra in the presence of Tl(I) showed differences between the electrode substrates. The sensitivity to Tl does not depend on the presence of other ions, and was better at carbon film electrodes, although the 2 nmolL(-1) detection limit was independent of electrode substrate. Application to the measurement of Tl(I) in commercial berry juice is demonstrated.
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收藏
页码：1301 / 1305
页数：5
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