Analisi integrata tramite XRF e LIBS per lo studio dei materiali pittorici

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[automatically translated] The study of painting materials is one of the primary goals for the artistic-historical characterization of works of art because it provides useful information about the original and degraded materials, the techniques used and any previous restoration. However, the complexity of investigations archaeometrical is linked to the need to safeguard the cultural heritage that makes it essential to use non-invasive investigations or micro techniques. Among the integrating methodologies, the use of X-ray fluorescence (XRF) spectroscopy and laser ablation (LIBS) meets this requirement and is particularly useful for the complementarity of the information provided, both in terms of compositional that investigated thicknesses . In fact, unlike XRF analysis, LIBS not only allows the identification of chemical elements with low atomic number, but, through consecutive laser pulses on the same sample point, also allows to realize the depth profiles. In this way it is possible to obtain information on the compositional differences between the surface and the bulk material and, therefore, reconstruct the stratigraphic sequence characteristic of the sample. Following this methodological approach, we were conducted LIBS and XRF analysis, both on fragments of mural paintings from different sites, both of drafts sample made in the laboratory with different pictorial techniques. In particular, using the LIBS analysis was possible to analyze the stratigraphy from the surface of the paint layers until the preparation layer. The results have enabled us to evaluate the potential,
Original languageItalian
Number of pages1
Publication statusPublished - 2011

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