Identifying Original and Restoration Materials through Spectroscopic Analyses on Saturnino Gatti Mural Paintings: How Far a Noninvasive Approach Can Go
Articolo
Data di Pubblicazione:
2023
Citazione:
Identifying Original and Restoration Materials through Spectroscopic Analyses on Saturnino Gatti Mural Paintings: How Far a Noninvasive Approach Can Go / L.M.A. Bonizzoni, S. Caglio, A. Galli, C. Germinario, F. Izzo, D. Magrini. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 13:11(2023), pp. 6638.1-6638.15. [10.3390/app13116638]
Abstract:
This paper presents the results obtained for the mural paintings (XV century CE) in the
church of San Panfilo in Villagrande di Tornimparte (AQ, Italy) by means of noninvasive spectroscopic
techniques; this research is a part of the project on the Saturnino Gatti pictorial cycle, promoted
and coordinated by the AIAr (the Italian Archaeometry Association). Digital optical microscopy
(OM), X-ray fluorescence spectroscopy (XRF), fiber optics reflectance spectroscopy in the UV–Vis–NIR
range (FORS), Fourier transform infrared spectroscopy in the external reflection mode (ER-FTIR),
and Raman spectroscopy were performed on the points selected based on the image analysis results
and the few available records on previous intervention, with the aim of characterizing both the
original and restoration organic and inorganic materials. The synergic application of complementary
techniques allowed us to obtain a complete picture of the palette and the main alteration products and
organic substances (of rather ubiquitous lipid materials and less widespread resin and proteinaceous
materials in specific points). The identification of modern compounds permitted the individuation of
restoration areas; this was confirmed by the comparison with multiband imaging results, as in the
case of specific green and blue pigments, strictly related to the presence of high signals of zinc. This
analytical protocol left only very few ambiguities and allowed to minimizing the number of samples
taken to clarifying, by sample laboratory analyses, the few doubts still open.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
mural painting; Saturnino Gatti; Italian Archaeometry Association; XRF; FORS; ER-FTIR; Raman spectroscopy; pigments; binders
Elenco autori:
L.M.A. Bonizzoni, S. Caglio, A. Galli, C. Germinario, F. Izzo, D. Magrini
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