Square-wave Voltammetry of Surface Electrode Mechanisms with Non-Unity Stoichiometry-Simulation Protocol in MATHCAD

Gulaboski, Rubin (2020) Square-wave Voltammetry of Surface Electrode Mechanisms with Non-Unity Stoichiometry-Simulation Protocol in MATHCAD. [Dataset] (Unpublished)

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Surface 2A+ne = B MECHANISM with non-unity stoichiometry in SWV 2020-MATHCAD Simulation.pdf

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Official URL: http://rubingulaboski.synthasite.com/

Abstract

Many metal ions and other physiologically active systems (like quinones and Vitamin B2 complexes) undergo electrochemical transformation in a fashion that is different from 1:1 stoichiometry. Cu II ions, and H+ ions, for example, are typical systems whose reduction happens in non-unity stoichiometry. As we know, reduction of H+ ions at platinum electrode goes via redox scheme 2H+ + 2e- = H2(gas) (dissolved in the Pt) We present in this simulation model for the first time simulation procedure of 2:1 stoichiometry under conditions of square-wave voltammetry. As expected, the peak potential of SWV voltammetric patterns of such systems is sensitive to analyte concentration, shifting for -59 mV in negative direction per decadic increase of c(H+). In addition, other SW voltammetric parameters are also affected by the analyte concentrations of 2:1 stoichiometric systems. This model is suitable for studying metal-ligand complexes of many transient metal ions, but also of many drugs that undergo direct 2 electron transformation, as the quinones in aqueous media, for example. A general explicit solution of all non-stoichiometry mechanisms for diffusional systems is published in recent work in Journal of Electroanalytical Chemistry. Here we present model only for 2:1 specific surface stoichiometry.

Item Type: Dataset
Subjects: Medical and Health Sciences > Basic medicine
Natural sciences > Biological sciences
Natural sciences > Chemical sciences
Natural sciences > Matematics
Natural sciences > Physical sciences
Divisions: Faculty of Medical Science
Depositing User: Rubin Gulaboski
Date Deposited: 21 Apr 2020 10:27
Last Modified: 21 Apr 2020 10:27
URI: http://eprints.ugd.edu.mk/id/eprint/23990

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