Abstract
In this preliminary note, a new type of working electrode – the renovated silver ring electrode (RSRE) – is presented. The main constituents of the RSRE: a specially constructed silver ring electrode, a silver sheet used as silver counter/quasi-reference electrode and a silicon O-ring are fastened together in a polypropylene body. The renovation of this electrode is carried out through mechanical removal of solid contaminants and electrochemical activation in the electrolyte which fills the RSRE body. The effectiveness of the renovation procedure was tested by designating the RF and E pzc and by recording C d– t curves. As shown on selected examples, RSRE exhibits good performance in underpotential deposition stripping voltammetry (UPD-SV) applied for the determination of Pb(II) traces in certified reference materials.
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