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Anodic dissolution of gold in cyanide solutions containing ions of thallium(I)

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Abstract

The potential dependence of the gold dissolution rate in alkali-cyanide solutions with and without 1.5 × 10-5 M T1NO3 is studied using the technique of the electrode surface renewal prior to taking measurements. The thallium ions accelerate the gold dissolution at potentials below 0.2 V and inhibit it at more positive potentials. The effect depends on the time the electrode is in contact with solution before the measurements, the potential scan rate, and concentrations of KCN and KOH. Possible approaches to interpreting the discovered phenomena are suggested.

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Authors and Affiliations

  1. Institute of Solid-State Chemistry and Mechanical Chemistry, Siberian Division, Russian Academy of Sciences, 630128, Novosibirsk, Russia

    R. Yu. Bek

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  1. R. Yu. Bek
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Bek, R.Y. Anodic dissolution of gold in cyanide solutions containing ions of thallium(I). Russ J Electrochem 36, 721–725 (2000). https://doi.org/10.1007/BF02757670

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  • DOI: https://doi.org/10.1007/BF02757670

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