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Suitability of transportable EDXRF for the on-site assessment of ancient silver coins and other silver artifacts
Gore, Damian B. Davis, Gillan
Gore, Damian B.
Davis, Gillan
Author
Abstract
Transportable energy dispersive X-ray fluorescence (XRF) spectrometers allow the elemental composition of coins to be measured at collections, enhancing security while maximizing access to historically important material. We assessed 10 silver coins, using five XRF spectrometers. We found no systematic differences between analyses using Mo- and Rh-anode tubes, and no substantial advantage using He flush over air for elements heavier than Ti. Higher voltage X-ray tubes enhanced analytical precision. Understanding patina composition made a numerical correction possible, allowing an approximation of the underlying coin metal with good results for metals including Cu, Ag, Au, Pb, and Bi.
Keywords
X-ray fluorescence spectrometry, elemental analysis, numismatics, patina, ancient history
Date
2016
Type
Journal article
Journal
Applied Spectroscopy Reviews
Book
Volume
70
Issue
5
Page Range
840-851
Article Number
ACU Department
Ancient Israel Program
Faculty of Education and Arts
Faculty of Education and Arts
Collections
Relation URI
Source URL
Event URL
Open Access Status
License
All rights reserved
File Access
Controlled