Microbalance study of gold dissolution in alkaline sulfite-thiocarbamide electrolytes

Autor:	O. N. Shevtsova, A. G. Zelinskii, R. Yu. Bek
Rok vydání:	2009
Předmět:	chemistry.chemical_compound chemistry Sulfite Inorganic chemistry Electrochemistry Electrolyte Voltammetry Dissolution Sodium sulfite
Zdroj:	Russian Journal of Electrochemistry. 45:818-822
ISSN:	1608-3342 1023-1935
DOI:	10.1134/s1023193509070180
Popis:	It is shown that gold does not virtually dissolve in alkaline (pH 12.5) solutions containing either thiocarbamide or sodium sulfite. Gold dissolves in alkaline solutions simultaneously containing thiocarbamide (0.1 M) and sodium sulfite (0.5 M). The gold dissolution rate increases with the increase in the contents of thiocarbamide and sodium sulfite. The methods of microbalance and voltammetry are used in studying the mechanism of gold dissolution in a solution containing 0.5 M sodium sulfite, 0.1 M thiocarbamide, and 0.03 M KOH. The found relationships are explained based on the assumption that the gold dissolution in alkaline sulfite-thiocarbamide electrolytes affords gold sulfite complexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6c772f17a6062b72bc53cd911266598e https://doi.org/10.1134/s1023193509070180 Zobrazit plný text záznamu Full text from SpringerLink