Scientific face of the artwork: Investigation of the pigments and plasters of the wall paints of some ottoman mosques by FTIR and EDXRF techniques
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Abstract
The characterization of the pigments and plasters of the wall paints of some Ottoman Mosques have been performed using combined Energy Dispersive X-Ray Fluorescence (EDXRF) and Fourier Transform Infrared (FTIR) spectrometry (both in reflection and transmission modes) techniques. The colored wall paints were obtained from Fatih Mosques of Istanbul-Turkey and Pristina-Kosovo, and Suleymaniye Mosque of Istanbul-Turkey, during the restoration periods of the mosques. The investigations show that the plaster used on the walls has mixed gypsum-lime binders. The pigments identified in wall paints are: cinnabar (HgS), lead red (Pb3O4) and hematite (α-Fe2O3) in red colors, ultramarine blue (Na8-10Al6Si6O24S2-4) as blue and green earth as green colors. The results provide a basis for future restoration of the wall paints.
Keywords: Pigments, Plasters, FTIR spectroscopy, EDXRF
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