Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra

Pisu, Francesca Assunta;Carbonaro, Carlo Maria;Corpino, Riccardo;Ricci, Pier Carlo;Chiriu, Daniele
2021

Abstract

In this study, we proposed a preliminary kinetic model applied to the carbonation process of fresh lime with the intention to realize a diagnostic tool for aged fresco paintings. The model can be useful, in particular, in the fields of conservation and restoration of ancient lime wall paintings. The dating procedure was achieved through the analysis of 1064 nm excited Raman spectra collected on artificially aged lime samples in addition to ancient samples taken from literature and covering a period of two thousand years. The kinetic model was developed monitoring the concentration of emitting defective centers related to the intensity of 780 cm−1 calcium hydroxide band as a function of the time and depth. This preliminary model shows how Raman spectroscopy, especially NIR micro-Raman, is advantageous for diagnostics and conservation in the cultural heritage field.
2021
eng
11
3
257
15
https://www.mdpi.com/2073-4352/11/3/257
Esperti anonimi
internazionale
Scientifica
frescoes; kinetic model; Raman spectroscopy; carbonation
no
Pisu, Francesca Assunta; Carbonaro, Carlo Maria; Corpino, Riccardo; Ricci, Pier Carlo; Chiriu, Daniele
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
5
open
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