Electrochemical dissolution of gold in presence of chloride and bromide traces studied by on-line electrochemical inductively coupled plasma mass spectrometry

Kasian O, Kulyk N, Mingers A, Zeradjanin AR, Mayrhofer K, Cherevko S (2016)

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Electrochimica Acta Elsevier

Publisher: PERGAMON-ELSEVIER SCIENCE LTD

Book Volume: 222

Pages Range: 1056-1063

DOI: 10.1016/j.electacta.2016.11.074

Abstract

Electrochemical dissolution of gold in the presence of halide ions is traditionally considered as a model case in metal corrosion and passivation studies. Due to a relatively low sensitivity of the conventional techniques, such studies were predominantly limited to electrolytes with high concentrations of halides. The current work employs a special electrochemical scanning flow cell with online inductively coupled plasma mass spectrometry (SFC-ICP-MS) that allows overcoming those limitations, enabling the quantification of gold dissolution in the presence of chloride and bromide traces (1 mu M <= [Cl- / Br-] <= 100 mu M). Moreover, time-and potential-resolved gold dissolution profiles under different potential programs are provided. Based on the experimental results, a tentative mechanism of gold dissolution based on the catalyzing role of hydroxyl and halide anions is discussed. (C) 2016 Elsevier Ltd. All rights reserved.

Authors with CRIS profile

Karl Mayrhofer Lehrstuhl für Elektrokatalyse (HIERN)

Involved external institutions

Max-Planck-Institut für Eisenforschung GmbH (MPIE) / Max Planck Institute for Iron Research DE Germany (DE)

How to cite

APA:

Kasian, O., Kulyk, N., Mingers, A., Zeradjanin, A.R., Mayrhofer, K., & Cherevko, S. (2016). Electrochemical dissolution of gold in presence of chloride and bromide traces studied by on-line electrochemical inductively coupled plasma mass spectrometry. Electrochimica Acta, 222, 1056-1063. https://doi.org/10.1016/j.electacta.2016.11.074

MLA:

Kasian, Olga, et al. "Electrochemical dissolution of gold in presence of chloride and bromide traces studied by on-line electrochemical inductively coupled plasma mass spectrometry." Electrochimica Acta 222 (2016): 1056-1063.

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