XRF and UV-Vis-NIR analyses of medieval wall paintings of al-Qarawiyyin Mosque (Morocco)

Sustainable Buildings and Cities

土木建筑工程

Fikri, I.^1 ; El Amraoui, M.^1 ; Haddad, M.^1 ; Ettahiri, A.S.^2 ; Bellot-Gurlet, L.^3 ; Falguères, C.^4 ; Lebon, M.^4 ; Nespoulet, R.^4 ; Ait Lyazidi, S.^1 ; Bejjit, L.^1

Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), URAC 11, Faculté des Sciences, Meknès, Université Moulay Ismail, Morocco^1

Institut National des Sciences de l'Archéologie et du Patrimoine (INSAP), Rabat, Morocco^2

MONARIS, UMR 8233, Université Pierre et Marie Curie, Paris, France^3

Muséum National d'Histoire Naturelle, UMR7194, Paris, France^4

关键词: Copper-based;    External layers;    UV-Vis NIR;    UV-vis-NIR diffuse reflectance spectroscopy;    Wall paintings;    X ray fluorescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/353/1/012020/pdf
DOI  :  10.1088/1757-899X/353/1/012020

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Medieval wall painting fragments, taken at the medieval Mosque of al-Qarawiyyin in Fez, have been investigated by means of X-ray fluorescence and UV-Vis-NIR diffuse reflectance spectroscopies. The analyses permitted to determine the palette of pigments used by craftsmen of the time. Hematite or red ochre were used to obtain red brown colours, calcite for white, copper-based pigments for blue and blue-grey shades while a mixture of cinnabar, lead-based pigments and hematite was adopted to make red-orange colours. Furthermore, the analysis of mortars (external layer and plaster) on these wall painting samples revealed that they are composed mainly by calcite and sometimes by additional compounds such as quartz and gypsum.