Spectroscopic analyses of Hellenistic painted plasters from 2nd century B.C., Sicily (South Italy) |
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| Authors: | Erica Aquilia Germana Barone Vincenza Crupi Francesca Longo Domenico Majolino Paolo Mazzoleni Valentina Venuti |
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| Institution: | 1. Department of Geological Science, University of Catania, Corso Italia 55, 95129 Catania, Italy;2. Department of Physics, University of Messina, V. le Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy |
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| Abstract: | In the present work, an analytical characterization of painted plaster samples coming from ancient buildings dated back to 2nd cent. B.C., located in Licata (Sicily, Southern Italy), has been carried out. The investigation has been performed through different spectroscopic techniques: X-ray fluorescence (XRF) using an handheld energy-dispersive XRF analyzer, scanning electron microscopy equipped with an Energy Dispersive Spectrometry microanalysis detector (SEM-EDS) and Fourier transform infrared absorbance spectroscopy (FT-IR). The main goal is to identify the plaster and pigments material. In particular, the XRF investigation of surfaces is the first step for a preliminary elemental characterization. Then, through SEM-EDS measurements, a quantitative analysis of the chemical composition of the plaster and the pigmenting agents along with eventual components related to deterioration processes has been obtained. Finally, FT-IR absorbance spectra have proven to be a useful tool to investigate the molecular nature of the used materials. |
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