Electrically heated cylindrical microelectrodes. Determination of lead on Pt by cyclic voltammetry and cathodic stripping analysis

被引：56
|
作者：
Zerihun, T [1 ]
Grundler, P [1 ]
机构：
[1] UNIV ROSTOCK,FACHBEREICH CHEM,D-18055 ROSTOCK,GERMANY
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1996年 / 415卷 / 1-2期
关键词：
lead; platinum; microelectrodes; cyclic voltammetry; cathodic stripping;
D O I：
10.1016/S0022-0728(96)04711-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The experiment involved cathodic stripping analysis of electrodeposited PbO2 in aqueous solutions of Pb2+ and HClO4 on a vertically arranged cylindrical Pt microelectrode (25 mu m diameter) at increased electrode temperature and free convection. The electrode was continuously heated in-situ using a 100 kHz alternating current during d.c. polarization. The stripping signals at the heated electrode were much better than those obtained at room temperature. Cyclic voltammetry and potentiostatic (anodic) deposition followed by a negative linear potential sweep were used for the deposition and stripping of PbO2.
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页码：85 / 88
页数：4
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