期刊
VIBRATIONAL SPECTROSCOPY
卷 62, 期 -, 页码 98-109出版社
ELSEVIER
DOI: 10.1016/j.vibspec.2012.05.003
关键词
Coptic icons; Raman microscopy; Gas chromatography-mass spectrometry; Pigments; Indigo; Ibrahim Al-Nasekh
资金
- Egyptian Ministry of Higher Education
Two Coptic icons were studied, these date from the 18th century and were painted by IbrahimAl-Nasekh and are currently to be found in Saint Mercurius Church, Saint Mercurius Monastery in Old Cairo, Egypt. The analytical techniques used were Raman microscopy, optical microscopy and gas chromatography-mass spectrometry in order to determine the stratigraphy of the artworks, to identify the pigments used and to determine the type of protective varnishes applied. Along with commonly used pigments in Egyptian artefacts such as orpiment (As2S3), vermilion (HgS), red lead (Pb3O4), white lead (2PbCO(3)center dot Pb(OH)(2)) and lamp black (C), the pigment indigo (C16H10N2O2) has been detected for the first time in Egyptian panel paintings. Gypsum (CaSO4 center dot 2H(2)O) was used as a white ground layer and the protective varnish applied is found to be Pinaceae resin. (C) 2012 Elsevier B.V. All rights reserved.
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