Titolo:  Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra
Data di pubblicazione:  2021
Data di prima pubblicazione on-line:  2021
Autori:  Pisu, Francesca Assunta; Carbonaro, Carlo Maria; Corpino, Riccardo; Ricci, Pier Carlo; Chiriu, Daniele
Numero degli autori:  5
Lingua:  Inglese
Presenza coautori internazionali:  no
Rivista:  CRYSTALS
Volume:  11
Fascicolo:  3
Numero dell’articolo:  257
Numero di pagine:  15
Digital Object Identifier (DOI):  http://dx.doi.org/10.3390/cryst11030257
Codice identificativo Scopus:  2-s2.0-85102694912
Codice identificativo ISI:  WOS:000633575300001
URL:  https://www.mdpi.com/2073-4352/11/3/257
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.
Parole chiave:  frescoes; kinetic model; Raman spectroscopy; carbonation
Tipologia: 1.1 Articolo in rivista

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