VOLTAMMETRIC CHARACTERIZATION OF SMALL PLATINUM IRIDIUM-BASED MERCURY FILM ELECTRODES

被引：26

作者：

WECHTER, C ^{[1
]}

OSTERYOUNG, J ^{[1
]}

机构：

[1] SUNY BUFFALO,DEPT CHEM,BUFFALO,NY 14214

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 234卷 / 02期

基金：

美国国家科学基金会;

关键词：

Platinum-iridium electrode;

D O I：

10.1016/S0003-2670(00)83569-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A 25-μm diameter microelectrode is constructed from 80% platinum-20% iridium alloy. Mercury films and hemispheres are readily deposited by cathodic reduction of mercury(I) onto the electrode surface and are completely removed by anodic oxidation. The platinum-iridium surface, in contrast with a platinum surface, is not scarred by interaction with mercury. Steady-state reduction currents and sharp oxidation peaks are obtained for the determination of cadmium at the PtIr-based mercury film electrode. The voltammetric signals depend on the age of the film, and hence routine analytical applications will require further development. © 1990.

引用

页码：275 / 284

页数：10

共 27 条

[1] CHARACTERIZATION OF NERNSTIAN SQUARE-WAVE VOLTAMMOGRAMS [J].