| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1471671 | Corrosion Science | 2008 | 4 Pages |
Abstract
The tarnishing originated on a hammered gold mask was analysed. Red tarnishing was observed after three years of storage in an indoor environment in the Gold Museum of Banco de la República, Bogotá, Colombia. Silver sulphide (Ag2S) and silver sulphate (Ag2SO4) compounds were identified as the origin of the tarnishing phenomenon, which is attributed to environmental contamination. Atomic absorption spectroscopy (AAS) and X-ray photoelectron spectroscopy (XPS) techniques were used.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
D.M. Bastidas, E. Cano, A.G. González, S. Fajardo, R. Lleras-Pérez, E. Campo-Montero, F.J. Belzunce-Varela, J.M. Bastidas,