Micro-Raman spectroscopic identification of pigments of 4th century Roman wall paintings

摘要

Raman spectroscopy is now a well-established method for the identification of crystalline and amorphous phases constituting ancient artefacts, including pigmentsl. Using micro-Raman techniques, samples like archeological frescoes can be examined nondestructively and noninvasively~2. Moreover this technique can provide in situ analysis at a micrometric scale. The scientific examination of the pigments used in archeological or art contexts, such as wall paintings, is important in revealing information for the characterization, restoration and preservation of the items. Furthermore, information that is important for the evaluation of cultural and economic features of earlier civilizations can be employed to build up an overview of the artistic materials and technologies employed.