RAPID ANODIC-STRIPPING ANALYSIS WITH ULTRAMICROELECTRODES

被引：131
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
收藏
页码：662 / 666
页数：5
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