Figure 1. Mercury frit electrode (MFE) with machined Lucite electrolysis cell Sir: The theory and analytical import of voltammetry with linearly varying potential at stationary electrodes has been discussed in an authoritative paper by Nicholson and Shain (6).Voltammograms so obtained exhibit peaks at potentials related to the relevant polarographic half-wave potentials.Single sweep voltammetry has been employed utilizing the mercury pool, hanging drop, as well as various solid indicator electrodes.With application of sufficiently fast scan rates (» 1 volt/sec., oscilloscopic polarography), peak polarograms are also obtained at the dropping mercury electrode. Rapid scan rates, however, possess the attendant liability of large capacitance currents. Slow scan rates Watertown, Mass.
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