Elemental and spectroscopic characterization of plasters from Fatih Mosque-Istanbul (Turkey) by combined micro-Raman, FTIR and EDXRF techniques

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Akyüz, Tanıl
Akyüz, Sevim
Güleç, Ahmet
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Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England
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The characterization of the plasters and coloring agents of the wall paintings of Fatih Mosque have been performed using combined micro-Raman, FTIR and EDXRF techniques. The investigations show that the plaster used on the walls has mixed gypsum lime binders. Cinnabar {HgS}, lead red {Pb3O4} and hematite {alpha-Fe2O3} were identified in the red surfaces. Blue color is attributed to ultramarine blue {Na8-10Al6Si6O24S2-4}. Green color is assigned to mixtures of green earth, copper phthalocyanine {Cu(C32Cl16N8)} and brochantite {CuSO4 center dot 3Cu(OH)(2)}. Strontium yellow {SrCrO4} and zinc white {ZnO} were also used to ensure the color tone. The results provide a basis for future restoration of wall paints. (C) 2015 Elsevier B.V. All rights reserved.
Anahtar kelimeler
EDXRF, Fatih Mosque, FTIR, Micro-Raman, Plasters, Wall paints, Reflection Ftir, Pigments, Paintings, Minerals, Mortars, Spectra