RAPID ANODIC-STRIPPING ANALYSIS WITH ULTRAMICROELECTRODES

被引：130

作者：

BARANSKI, AS

机构：

[1] Univ of Saskatchewan, Saskatoon,, Sask, Can, Univ of Saskatchewan, Saskatoon, Sask, Can

来源：

ANALYTICAL CHEMISTRY | 1987年 / 59卷 / 04期

关键词：

ELECTRIC MEASUREMENTS - Resistance - ELECTRODES - Carbon - FIBERS; NONTEXTILE - MERCURY AND AMALGAMS - Electrodeposition;

D O I：

10.1021/ac00131a026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Mercury-film microelectrodes (7-10 mu m in diameter) prepared by the electrodeposition of mercury on a carbon fiber or a thin platinum wire were used in rapid-multicomponent-trace determinations of heavy metals in very small (5- mu L) samples. Stripping experiments were carried out under linear sweep voltammetry conditions with sweep rates in the range of 1-100 V/s. The preconcentration time was varied from 10 to 640 s. Background currents were determined in a separate sweep cycle, conducted without preconcentration after each stripping experiment, and they were numerically subtracted from the stripping curves.

引用

页码：662 / 666

页数：5

共 14 条

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