Theory of anodic stripping voltammetry at wall-jet electrodes. Simulation of spatially differential stripping and redeposition phenomena

Article Abstract:

The significance of the anodic stripping voltammetry (ASV) as an analytical technique for trace metals spurred scientific investigations on its application to hydrodynamic wall-jet electrodes. Simulations of ASV on these electrodes which exhibit grossly nonuniform accessibility patterns were performed. The data demonstrate that the electrodes enhanced the differential stripping of the Red film. Moreover, the observed redeposition of the electrodes were attributed to the increase in Ox levels resulting from the poor removal of the Ox from the solution.

Hydrodynamics

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Anodic stripping voltammetry at hydrodynamic mercury electrodes. Square wave voltammetry: numerical theory for electrochemically reversible systems

Article Abstract:

The square wave voltammetry (SWV) was developed by numerical simulations using the time-dependent backward implicit method to study electrochemically reversible processes undergoing anodic stripping at hydrodynamic mercury electrodes. Results indicated that significant modifications of the current response can be observed compared with semi-infinite diffusion conditions when SWV is conducted under hydrodynamic conditions. The results were found to agree well with existing analytical theory.

Mercury, Mercury (Metal)

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Square wave anodic stripping voltammetry at mercury-plated electrodes. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets

Article Abstract:

A general approach is developed for the numerical simulation of square wave anodic stripping voltammetry at hemispherical and uniform planar electrodes based on the backward implicit method. Data is presented for the nature of mercury on the surface of both iridium and copper substrates, obtained by atomic force microscopy.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Iridium, Copper, Chemical properties

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