MICROJET ELECTRODE - A HYDRODYNAMIC ULTRAMICROELECTRODE WITH HIGH MASS-TRANSFER RATES

被引：97

作者：

MACPHERSON, JV ^{[1
]}

MARCAR, S ^{[1
]}

UNWIN, PR ^{[1
]}

机构：

[1] UNIV WARWICK, DEPT CHEM, COVENTRY CV4 7AL, W MIDLANDS, ENGLAND

来源：

ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 13期

关键词：

D O I：

10.1021/ac00085a037

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The microjet electrode (MJE)-a new hydrodynamic ultramicroelectrode-is described. In the MJE, a jet of solution is fired at high velocities (up to 25 m s(-1)) through a fine nozzle positioned directly over a disk ultramicroelectrode (UME) with the aid of micropositioners. The electrode is shown to be characterized by well-defined, variable, and high mass-transfer rates under steady-state voltammetric conditions (up to 2 orders of magnitude greater than the conventional diffusion rate) and thus has considerable promise for the study of fast electrode kinetics.

引用

页码：2175 / 2179

页数：5

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