Voltammetry in solutions of low ionic strength. Electrochemical and analytical aspects

Chromatographic, Polarographic and Ion-Selective Electrodes Methods for Chemical Analysis of Groundwater Samples in Hydrogeological Studies

“…Voltammetric measurements in solutions of very low ionic strength, including those without deliberately added supporting electrolyte, became possible by using microelectrodes, electrodes with at least one essential dimension in the range of micrometers or less [36]. Voltammetric measurements without supporting electrolyte departed significantly from the traditional way such measurements were performed.…”

A Review of Non-Cottrellian Diffusion Towards Micro- and Nano-Structured Electrodes

“…The expressions for current vs. time responses to applied voltage steps across the whole system, and corresponding concentration profiles within the cell or membrane were derived by Nahir and Buck and compared with experimental results (Nahir & Buck, 1992). Voltammetry in solutions of low ionic strength has been reviewed by Ciszkowska and Stojek (Ciszkowska & Stojek, 1999). A mathematical model of migration and diffusion coupled with a fast preceding reaction at a microelectrode was developed by Jaworski and co-workers (Jaworski et al, 1999).…”

Voltammetry of Undiluted Red‐Ox Systems. Electrochemical ESR‐ and Electrochemical Impedance Spectroscopy Evidence for Formation of Ionic Liquid at Microelectrode Surface

“…As it is seen from Figure 5 the medium resistance drops significantly already at a potential corresponding to the half height of the voltammogram wave. It should be added here that the overall resistance between the counter and working electrodes is determined, in fact, by the resistance of the reaction/depletion layer at the microelectrode surface [8].…”

“…Simultaneously, the concentration of the product, which is charged, should increase to the appropriate very high level. It is known that the concentration of the charged product, to preserve electroneutrality, must be neutralized by the appropriate quantity of the counterions present in the medium, which should lead to significant changes in the composition and resistance of the solution layer located at the microelectrode surface [8]. Finally, one can reach a conclusion that during the electrolysis of undiluted organic liquid a particular ionic liquid is formed at the electrode surface.…”