A detailed micro-Raman spectroscopic study ...
Type de document :
Compte-rendu et recension critique d'ouvrage
DOI :
Titre :
A detailed micro-Raman spectroscopic study of wall paintings of the period AD 100-200: effect of atmospheric conditions on the alteration of samples
Auteur(s) :
Cristini, O. [Auteur correspondant]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Kinowski, C. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Turrell, S. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Kinowski, C. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Turrell, S. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Titre de la revue :
Journal of Raman Spectroscopy
Pagination :
1410 - 1417
Éditeur :
Wiley
Date de publication :
2010
ISSN :
0377-0486
Mot(s)-clé(s) en anglais :
Raman spectroscopy
wall paintings
pigments
preparatory layer
alteration
wall paintings
pigments
preparatory layer
alteration
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
Résumé en anglais : [en]
In this study, optical microscopy and micro-Raman spectroscopy were used to determine the chemical compositions of the materials used in the preparatory and pictorial layers of wall paintings from four different sites of ...
Lire la suite >In this study, optical microscopy and micro-Raman spectroscopy were used to determine the chemical compositions of the materials used in the preparatory and pictorial layers of wall paintings from four different sites of the Roman Empire of first to second century AD. The use of UV excitation for the Raman work for the study of the preparatory layers made it possible to overcome the problems of fluorescence. The fresco technique, revealed by the presence of calcite in the Greek and Roman samples, was not used for the Gallo-Roman works. The studies indicated that the same compounds were used for red and green pigments throughout the Roman Empire: red ocher (hematite) and green earths (celadonite, in the case of the Gallo-Roman fragments). It is shown that the impact of the atmosphere on the sample surface is very important, because the only fragments to have suffered identifiable deterioration are those from the 'open-air humid room' in Kenchreai. The presence of gypsum in these samples in the absence of pigment indicates the implication of SO<sub>2</sub> in the deterioration and makes it possible to suggest that the pigments in the pictorial layer can serve as a protection for the calcite preparatory layers.Lire moins >
Lire la suite >In this study, optical microscopy and micro-Raman spectroscopy were used to determine the chemical compositions of the materials used in the preparatory and pictorial layers of wall paintings from four different sites of the Roman Empire of first to second century AD. The use of UV excitation for the Raman work for the study of the preparatory layers made it possible to overcome the problems of fluorescence. The fresco technique, revealed by the presence of calcite in the Greek and Roman samples, was not used for the Gallo-Roman works. The studies indicated that the same compounds were used for red and green pigments throughout the Roman Empire: red ocher (hematite) and green earths (celadonite, in the case of the Gallo-Roman fragments). It is shown that the impact of the atmosphere on the sample surface is very important, because the only fragments to have suffered identifiable deterioration are those from the 'open-air humid room' in Kenchreai. The presence of gypsum in these samples in the absence of pigment indicates the implication of SO<sub>2</sub> in the deterioration and makes it possible to suggest that the pigments in the pictorial layer can serve as a protection for the calcite preparatory layers.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
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