A joint use of Raman and infrared spectroscopies for the identification of natural organic media used in ancient varnishes


Various natural organic film-making media from several chemical families have been used as varnishes. An improvement in the identification of these materials by the combination of Raman and infrared spectroscopies is here presented. Fourteen unaged reference samples representative of resins, glues, gums and oils were analyzed. FT-Raman and IR spectra were… (More)


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