Micro-EDXRF surface analyses of a bronze spear head: Lead content in metal and corrosion layers

E. Figueiredo; P. Valério; M. F. Araújo; J. C. Senna-Martinez

doi:10.1016/j.nima.2007.05.135

Micro-EDXRF surface analyses of a bronze spear head: Lead content in metal and corrosion layers

E. Figueiredo, P. Valério, M. F. Araújo, J. C. Senna-Martinez

DCR - Departamento de Conservação e Restauro

Research output: Contribution to journal › Article

29 Citations (Scopus)

Abstract

A bronze spear head from Central Portugal dated to Late Bronze Age has been analyzed by non-destructive micro-EDXRF in the metal surface and corrosion layers. The artifact had previously been analyzed using a conventional EDXRF spectrometer having a larger incident beam. The quantification of the micro-EDXRF analyses showed that lead content in corrosion layers can reach values up to four times higher than the content determined in the metal surface. Results obtained with the higher energy incident beam from the EDXRF equipment, although referring mainly to the corrosion layers, seem to suffer some influence from the surface composition of the metallic alloy.

Original language	English
Pages (from-to)	725-727
Number of pages	3
Journal	Nuclear Instruments & Methods In Physics Research Section A-Accelerators Sp
Volume	580
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nima.2007.05.135
Publication status	Published - 21 Sep 2007

Keywords

Archaeometallurgy
Bronze alloy
Late Bronze Age
Lead
Micro-EDXRF

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10.1016/j.nima.2007.05.135

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title = "Micro-EDXRF surface analyses of a bronze spear head: Lead content in metal and corrosion layers",

abstract = "A bronze spear head from Central Portugal dated to Late Bronze Age has been analyzed by non-destructive micro-EDXRF in the metal surface and corrosion layers. The artifact had previously been analyzed using a conventional EDXRF spectrometer having a larger incident beam. The quantification of the micro-EDXRF analyses showed that lead content in corrosion layers can reach values up to four times higher than the content determined in the metal surface. Results obtained with the higher energy incident beam from the EDXRF equipment, although referring mainly to the corrosion layers, seem to suffer some influence from the surface composition of the metallic alloy.",

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AU - Valério, P.

AU - Araújo, M. F.

AU - Senna-Martinez, J. C.

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