High-voltage electrodeposition conditions in the stripping voltammetry of metal ions: A mechanism and analytical prospects of the process

It was found that the exaltation phenomenon in the parallel reduction of hydrogen ions from weak acids or water is responsible for the acceleration of the electrodeposition of metals under high-voltage conditions. Under these conditions, the rate of electrodeposition can be increased by 2 to 3 orders of magnitude compared to the rates of electrodeposition under standard conditions. At a constant high voltage of electrodeposition, the stripping peak currents of metals are proportional to the deposition time and the bulk concentration of analyte ions. Exaltation phenomena can be used in analysis not only for intensifying the process, but also for lowering the limit of detection, improving the selectivity, and decreasing the adverse effect of surfactants.