Abstract
Significant advantages of Fourier transformed large-amplitude ac higher (second to eighth) harmonics relative to responses obtained with conventional small-amplitude ac of dc cyclic voltammetric methods have been demonstrated with respect to (i) the suppression of capacitive background currents, (ii) the separation of the reversible reduction of [Ru(NH3)6] 3+ from the overlapping irreversible oxygen reduction process under conditions where aerobic oxygen remains present in the electrochemical cell, and (iii) the kinetic resolution of the reversible [Ru(NH3) 6]3+/2+ process in mixtures of [Fe(CN)6,] 3- and [Ru(NH3)6]3+ at appropriately treated boron-doped diamond electrodes, even when highly unfavorable [Fe(CN)6]3- to [Ru(NH3)6] 3+ concentration ratios are employed. Theoretical support for the basis of kinetic discrimination in large-amplitude higher harmonic ac cyclic voltammetry is provided.
Original language | English |
---|---|
Pages (from-to) | 3619-3629 |
Number of pages | 11 |
Journal | Analytical Chemistry |
Volume | 76 |
Issue number | 13 |
DOIs | |
Publication status | Published - 1 Jul 2004 |
ASJC Scopus subject areas
- Analytical Chemistry