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Bipartite expressions for amperometric currents of recessed, membrane covered planar and hanging mercury drop electrodes

机译:凹式,膜覆盖式平面和悬挂式汞滴电极的安培电流的二分表达式

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摘要

An investigation of dynamic amperometric currents at recessed, membrane covered planar and hanging mercury drop electrodes has been conducted. Two expressions for current transients were found to have different convergent properties depending oil the value of dimensionless time T = Dt/L-2, where D is diffusion coefficient, t is time and L is the recess depth for a recessed electrode, the membrane thickness for a membrane covered electrode and the radius of the mercury drop for a hanging mercury drop electrode. A simple but accurate solution function was derived which consisted of the rapid convergent elements of these two expressions; this proved to be valid for the entire response time range allowing a dynamic simulation and a route to computing the diffusion coefficient of an electroactive solute through the diffusion barriers at the working electrode. (c) 2007 Elsevier B.V. All rights reserved.
机译:已经研究了在凹进,膜覆盖的平面和悬挂式汞滴电极上的动态安培电流。根据油的无量纲时间T = Dt / L-2的值,发现电流瞬变的两个表达式具有不同的收敛特性,其中D是扩散系数,t是时间,L是凹陷电极的凹陷深度,膜厚度对于膜覆盖电极,汞滴半径用于悬挂式汞滴电极。导出了一个简单但准确的求解函数,该函数由这两个表达式的快速收敛元素组成;这被证明在整个响应时间范围内都是有效的,从而可以进行动态仿真并计算出通过工作电极上的扩散势垒计算电活性溶质的扩散系数的途径。 (c)2007 Elsevier B.V.保留所有权利。

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