Η τεχνολογική μελέτη μιας αιγυπτιακής μάσκας από τη συλλογή Νίκου Χατζηκυριάκου-Γκίκα

Περίληψη

For the re-exhibition of Nikos Hadjikyriakos-Ghika collection in the renovated gallery, artist’s house-workshop, all artifacts and paintings of his personal collection were conserved. Among the significant objects of the collection was a three-dimensional Egyptian mask (inv. no. ΠΧΓ.α_16, h 26.5 x w 18.8 x d 9 cm). For the needs of conservation treatment and implementing the appropriate method, the technological features of the object were studied. Non-destructive analytical methods mainly applied, micro-samples were selectively taken for performing the destructive analytical methods. For the identification of inorganic pigments were used different analytical methods, such as fluorescence spectroscopy X-ray (XRF), pigments identification by polarizing microscope (PLM) and scanning electron microscopy (SEM –EDS analysis). The natural resin of the painted surface was examined by Fourier transform infrared (FTIR) spectroscopy. Finally, the photographic documentation of conservation treatment was in the visible, infrared and ultraviolet spectrum. The study of object’s technology certified elements such as linen fabric, plaster preparation and the colour palette after pigments identification. Egyptian blue, orpiment, iron oxides and natural calcite are the pigments used for the decoration of the mask and can confirm object’s authenticity.The oxidized varnish covering the painted surface was natural organic resin and its composition was identified as sandarac. The use of this resin starts from ancient times up to 1950. The detection of arsenic element across the surface of the object was specified as residue of older generation insect repellent probably used during past prevented conservation treatment. The well-documented technical study of Egyptian mask helped in the understanding of its technology which determined the conservation treatment both by preserving technological elements such as the varnish and by providing future stability for the Egyptian mask.