An Energy-Dispersive X-Ray Fluorescence Spectrometry and Monte Carlo simulation study of Iron-Age Nuragic small bronzes ("Navicelle") from Sardinia, Italy

被引:13
作者
Schiavon, Nick [1 ]
de Palmas, Anna [2 ]
Bulla, Claudio [2 ]
Piga, Giampaolo [3 ]
Brunetti, Antonio [3 ,4 ]
机构
[1] Univ Evora, HERCULES Lab Study & Conservat Cultural Heritage, Evora, Portugal
[2] Univ Sassari, Dipartimento Storia Sci Uomo & Formaz, Sassari, Italy
[3] Univ Sassari, Dipartimento Sci Polit, Sci Comunicaz, Ingn Informaz, Sassari, Italy
[4] Univ Sassari & Cagliari, CIRTEBEC, Sassari, Italy
关键词
Energy Dispersive X-Ray Fluorescence Spectroscopy; Monte Carlo simulations; Nuragic bronzes; Navicelle; Sardinia; K-ALPHA/K-BETA; METAL SHEETS; SPECTROSCOPY; RADIATION; THICKNESS; LIBRARY; IBERIA; ART; XRF;
D O I
10.1016/j.sab.2016.07.011
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
A spectrometric protocol combining Energy Dispersive X-Ray Fluorescence Spectrometry with Monte Carlo simulations of experimental spectra using the XRMC code package has been applied for the first time to characterize the elemental composition of a series of famous Iron Age small scale archaeological bronze replicas of ships (known as the "Navicelle") from the Nuragic civilization in Sardinia, Italy. The proposed protocol is a useful, nondestructive and fast analytical tool for Cultural Heritage sample. In Monte Carlo simulations, each sample was modeled as a multilayered object composed by two or three layers depending on the sample: when all present, the three layers are the original bronze substrate, the surface corrosion patina and an outermost protective layer (Paraloid) applied during past restorations. Monte Carlo simulations were able to account for the presence of the patina/corrosion layer as well as the presence of the Paraloid protective layer. It also accounted for the roughness effect commonly found at the surface of corroded metal archaeological artifacts. In this respect, the Monte Carlo simulation approach adopted here was, to the best of our knowledge, unique and enabled to determine the bronze alloy composition together with the thickness of the surface layers without the need for previously removing the surface patinas, a process potentially threatening preservation of precious archaeological/artistic artifacts for future generations. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:42 / 46
页数:5
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