计时电流的因子分析-法拉第电流与充电电流的分离

Separation of Faradic and Charging Current with Factor Analysis for Chronoamperometry

基于电化学理论电流公式,用迭代目标变换因子分析法对计时电流曲线进行处理,得到分离的法拉第电流和充电电流成分,对于简单的电极过程,分离效果很好,信噪比得到提高,法拉第电流分量可用于定量分析.

Iteration target transformation factor analysis (ITTFA) method was used to process the data of chronoamperometry. Based on the current theory of electrochemistry, it separated the total current signal into two components, Faraday current and charging current. The results showed that ITTFA method not only can separate them successfully, but also increase signal to noise level in Faraday current. The relative coefficient of the Faraday charge integrated from the separated component to the concentration of samples was satisfactory. This method may be used for quantitative analysis.