ANALYTICAL MICROELECTRODE VOLTAMMETRY WITH MINIMAL INSTRUMENTATION

被引：11

作者：

LAFLEUR, RD ^{[1
]}

MYLAND, JC ^{[1
]}

OLDHAM, KB ^{[1
]}

机构：

[1] TRENT UNIV,PETERBOROUGH K9J 7B8,ONTARIO,CANADA

来源：

ELECTROANALYSIS | 1990年 / 2卷 / 03期

关键词：

D O I：

10.1002/elan.1140020309

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The manual recording of near‐steady‐state diffusion currents at inlaid disk or shrouded hemispherical microelectrodes provides a simple and accurate analytical method for a variety of electroactive species in the micromolar and millimolar concentration ranges. The only instrumentation needed is a battery, a chain of resistors, and a battery‐powered picoammeter. A two‐electrode cell suffices. Ferrocene in an acetonitrile solution can be analyzed at concentrations as low as 2.0 μM, but the detection limits are higher in aqueous solutions. Using a simple microcell, as little as 100 pmol of ferrocene could be detected. This work resembles some of the earliest voltammetric studies, but the use of smaller electrodes provides a firmer theoretical foundation to the experiments. Copyright © 1990 VCH Publishers, Inc.

引用

页码：223 / 228

页数：6

共 24 条

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[2] INSTRUMENTAL CONFIGURATIONS FOR THE DETERMINATION OF SUBMICROMOLAR CONCENTRATIONS OF ELECTROACTIVE SPECIES WITH CARBON, GOLD AND PLATINUM MICRODISK ELECTRODES IN STATIC AND FLOW-THROUGH CELLS [J].