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Square-wave Amplitude Effect in Cathodic and Anodic Stripping Square-wave Voltammetry

机译:阴极和阳极剥离方波伏安法中的方波振幅效应

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摘要

In this paper a theoretical study of stripping processes at planar electrodes under conditions of square-wave voltammetry is presented. A mechanistic examination for cathodic stripping electrode mechanisms, a simple anodic striping mechanism, and anodic stripping mechanisms coupled with adsorption equilibrium of the analyte are discussed using varying square-wave amplitudes. The methodologies described here use two typical features: the peak potential separation of square-wave components and the amplitude-based quasireversible maximum. Both methods can be applied at a constant frequency, i.e., constant scan rate. The received data are combined with the critical parameters of electrode reaction kinetics. Thus, the established methodologies allow for a simple kinetic characterization. The received diagnostic criteria are verified with experiments at a glassy carbon electrode for lead ions.
机译:本文提出了一种在方波伏安法条件下平面电极剥离过程的理论研究。 使用变化的方波振幅讨论了用于阴极剥离电极机构,简单的阳极条纹机构和与分析物的吸附平衡的阳极剥离机构进行机械检查。 这里描述的方法使用了两个典型特征:方波分量的峰值电位分离和基于幅度的额定最大值。 两种方法都可以以恒定的频率施加,即恒定扫描速率。 接收的数据与电极反应动力学的关键参数组合。 因此,所建立的方法允许简单的动力学表征。 通过在铅离子的玻碳电极处进行验证所接受的诊断标准。

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