An XPS study of tarnishing of a gold mask from a pre-columbian culture

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Título:	An XPS study of tarnishing of a gold mask from a pre-columbian culture
Autor:	Bastidas, David M. CSIC ORCID; Cano Díaz, Emilio CSIC ORCID ; González, A. G.; Fajardo, Santiago CSIC ORCID ; Lleras‐Pérez, R.; Campo‐Montero, E.; Belzunce‐Varela, F. J.; Bastidas Rull, José María
Palabras clave:	Calima– Nariguera mask Hammered gold Tarnishing Corrosion
Fecha de publicación:	jun-2008
Editor:	Elsevier
Citación:	Corrosion Science 50 (6) : 1785-1788 (2008)
Resumen:	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.
Versión del editor:	http://dx.doi.org/10.1016/j.corsci.2008.04.009
URI:	http://hdl.handle.net/10261/37701
DOI:	10.1016/j.corsci.2008.04.009
ISSN:	0010-938X
Aparece en las colecciones:	(CENIM) Artículos

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