titoli, abstracts, parole chiave >>>
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)

Bottaini, Carlo Emanuele and Mirão, José and Figuereido, M. and Candeias, António and Brunetti, Antonio and Schiavon, Nick (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, Vol. 103-104 , p. 9-13. ISSN 0584-8547. eISSN 1873-3565. Article.

Full text not available from this repository.

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 by micro 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.

Item Type:Article
ID Code:10621
Status:Published
Refereed:Yes
Uncontrolled Keywords:Monte Carlo simulation, EDXRF, μXRD, BSEM/EDS, archaeometallurgy
Subjects:Area 02 - Scienze fisiche > FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze Politiche, Scienze della Comunicazione e Ingegneria dell'Informazione
Publisher:Elsevier
ISSN:0584-8547
eISSN:1873-3565
Deposited On:15 Jan 2015 10:09

I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore

Repository Staff Only: item control page