Feature Article
Redox kinetics in cathodic stripping square‐wave voltammetry
Abstract
Several redox systems with reactants which are immobilized at the electrode surface (EuSal complex, SeIV and SeIV in the presence of CuII, cysteine and p‐nitrophenol) were studied by square‐wave voltammetry to examine whether their redox kinetics can be measured by using the phenomenon of the ‘quasireversible maximum’. This is explained in detail. The following standard rate constants are obtained: EuSal complex ks = 720 ± 31 s−1, SeIV/CuII, log [ks/(cms−1)] = 0.94 ± 0.9, cysteine, log [ks/(cms−1)] = 0.6 ± 0.9 and p‐nitrophenol, ks > 1200 ± 50 s−1.
Citing Literature
Number of times cited: 12
- Viswanathan S. Saji and Chi-Woo Lee, Selenium electrochemistry, RSC Advances, 10.1039/c3ra40678d, 3, 26, (10058), (2013).
- Valentin Mirčeski and Milivoj Lovrić, EC mechanism of an adsorbed redox couple. Volume vs surface chemical reaction, Journal of Electroanalytical Chemistry, 565, 2, (191), (2004).
- Mitko Mladenov, Valentin Mirčeski, Icko Gjorgoski and Blagoja Jordanoski, Redox kinetic measurements of glutathione at the mercury electrode by means of square-wave voltammetry. The role of copper, cadmium and zinc ions, Bioelectrochemistry, 65, 1, (69), (2004).
- Vladimir Sladkov, François David and Blandine Fourest, Copper–mercury film electrode for cathodic stripping voltammetric determination of Se(IV), Analytical and Bioanalytical Chemistry, 375, 2, (300), (2003).
- Vladimir Sladkov, Andras Bolyos and François David, Modified Square‐Wave Cathodic Stripping Voltammetry for Determination of Se(IV) at Trace and Ultratrace Levels, Electroanalysis, 14, 2, (128-134), (2002).
- Valentin Mirčeski, Square-wave voltammetry of an EC reaction of a partly adsorbed redox couple, Journal of Electroanalytical Chemistry, 508, 1-2, (138), (2001).
- Fernando Garay and Velia M Solis, Adsorptive square wave voltammetry of metal complexes. Effect of ligand concentration, Journal of Electroanalytical Chemistry, 505, 1-2, (109), (2001).
- Šebojka Komorsky-Lovrić, Square-wave voltammetry of an aqueous solution of indigo, Journal of Electroanalytical Chemistry, 482, 2, (222), (2000).
- Valentin Mirčeski and Milivoj Lovrić, A Cathodic Stripping Square‐Wave Voltammetry of a Second‐Order Redox Reaction and Its Application to the Mercury‐Cysteine System, Electroanalysis, 10, 14, (976-984), (1999).
- Marina Mlakar and Ivan Čuljak, Square‐wave voltammetry of 4,4′‐diisopropyl‐2,2′‐bithiazoline and its complex with copper(II), Electroanalysis, 9, 5, (390-394), (2005).
- Milivoj Lovrić, Šbojka Komorsky‐Lovrić and Fritz Scholz, Staircase voltammetry with finite diffusion space, Electroanalysis, 9, 7, (575-577), (2005).
- Marina Mlakar, Ivan Čuljak, Senka Daković and Marko Branica, Voltammetric study of chiral active compound 4,4′‐diisopropyl‐2,2′‐thiazoline and its interaction with copper(II), Electroanalysis, 9, 1, (63-67), (2005).
