Publication details
Perspektivy eliminační voltametrie
| Title in English | The Perspectives of Elimination Voltammetry |
|---|---|
| Authors | |
| Year of publication | 2016 |
| Type | Article in Proceedings |
| Conference | 68. Sjezd českých a slovenských chemický společností |
| MU Faculty or unit | |
| Citation | |
| Field | Physical chemistry and theoretical chemistry |
| Keywords | elimiantion voltammetry; scan rate; diffusion current; kinetic current; charging current; pulse methods; math software |
| Description | The sensitivity of voltammetry is very often limited by charging current component and by the small potential window, which is limited not only by anodic stripping but also by discharging of supporting electrolyte and solvent. The elimination of charging current component (low concentrations of depolarizer) was solved by using AC and pulse techniques. In this time, the elimination voltammetry with linear scan (EVLS) enables the elimination of charging current component and enlargement of potential window. The theory and verification of EVLS is known for twenty years.EVLS is the mathematical procedure, eliminating/conserving some of the partial currents (diffusion, charging, kinetic) from the measured LSV or CV curves. The result is the elimination function as the linear combination of total currents measured at different scan rates. The elimination of some partial current component from measured voltammetric curves enables to obtain more informations about the electrode process of inorganic and organic systems. In this contribution are mentioned the perspective applications of EVLS, such as: (a) the possibilty to explain the electrode mechanisms of compounds. The reduction of these compounds proceeds at very negative potentials hidden in the reduction process of supporting electrolyte. (b) the fast diagnostic of adsorbed state of analyte studied, (c) resolution of overlapped voltammetric signals and (d) decreasing of detection limits. The general errors and preconceptions, blocking the use of this mathematical software are notified in the discussion. |