Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/18061

Title: Energy dispersive X-ray fluorescence spectroscopy/Monte Carlo simulation approach for the non-destructive analysis of corrosion patina-bearing alloys in archaeological bronzes: The case of the bowl from the Fareleira 3 site (Vidigueira, South Portugal)
Authors: Bottaini, C
Mirao, J
Figueiredo, M
Candeias, A
Brunettti, A
Schiavon, N
Keywords: Monte Carlo simulation
EDXRF
μXRD
BSEM/EDS
Archaeometallurgy
Issue Date: 2015
Publisher: Elsevier
Citation: C. Bottaini, J. Mirão, M. Figuereido, A. Candeias, A. Brunetti, N. Schiavon (2015) Energy dispersive X-ray fluorescence spectroscopy/Monte Carlo simulation approach for the non-destructive analysis of corrosion patina-bearing alloys in archaeological bronzes: The case of the bowl from the Fareleira 3 site (Vidigueira, South Portugal). Spectrochimica Acta Part B: Atomic Spectroscopy. doi:10.1016/j.sab.2014.10.015
Abstract: Energy dispersive X-ray fluorescence (EDXRF) is awell-known technique for non-destructive and in situ analysis of archaeological artifacts both in terms of the qualitative and quantitative elemental composition because of its rapidity and non-destructiveness. In this study EDXRF and realistic Monte Carlo simulation using the X-ray Monte Carlo (XRMC) code package have been combined to characterize a Cu-based bowl fromthe Iron Age burial from Fareleira 3 (Southern Portugal). The artifact displays a multilayered structure made up of three distinct layers: a) alloy substrate; b) green oxidized corrosion patina; and c) brownish carbonate soil-derived crust. To assess the reliability ofMonte Carlo simulation in reproducing the composition of the bulk metal of the objects without recurring to potentially damaging patina's and crust's removal, portable EDXRF analysis was performed on cleaned and patina/crust coated areas of the artifact. Patina has been characterized bymicro X-ray Diffractometry (μXRD) and Back-Scattered Scanning Electron Microscopy + Energy Dispersive Spectroscopy (BSEM + EDS). Results indicate that the EDXRF/Monte Carlo protocol is well suited when a two-layered model is considered,whereas in areaswhere the patina+crust surface coating is too thick, X-rays fromthe alloy substrate are not able to exit the sample.
URI: http://hdl.handle.net/10174/18061
Type: article
Appears in Collections:HERCULES - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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