It was studied the influence of concentration Na 2S 2O 3 (0,005…0,25 М) and the exposition time of a bismuth electrode in 0,5 М Na 2S and 0,1 М Na 2S 2O 3 for the electroreduction of bismuth (III) ethylenediamintetraacetate complexes at рН 6,0. It was established that these factors reduce the overpotential of cathode reaction. It is shown that the increase of the electrode process rate is associated with the surface complexation at low concentrations of Na 2S 2O 3 (0,005 М), and with the formation of the mixed ligand complex [ВiEdtaS 2O 3] 3 - in the solution bulk at large concentrations of Na 2S 2O 3 .
электрохимические процессы, электровосстановление, висмут, тиосульфат-ионы, комплексообразование, этилендиаминтетраацетатные комплексы, вольтамперометрия, electrochemical processes, electroreduction, bismuth, thiosulfate-ions, ethylenediamintetraacetate complexes, voltammetry
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