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 [Dataset] (Unpublished)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 Download (1MB) | Preview |
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: | https://eprints.ugd.edu.mk/id/eprint/23990 |
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