This article is part of the Journal of Raman Spectroscopy special issue entitled “Raman spectroscopy in art and archaeology” edited by Juan Manuel Madariaga and Danilo Bersani.
Evaluation of the intervention of a folding screen belonging to the Momoyama period by Raman spectroscopy using different wavelengths†
Article first published online: 9 NOV 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: Raman spectroscopy in art and archaeology
Volume 43, Issue 11, pages 1699–1706, November 2012
How to Cite
Pessanha, S., Le Gac, A., Madeira, T. I., Bruneel, J.-L., Longelin, S. and Carvalho, M. L. (2012), Evaluation of the intervention of a folding screen belonging to the Momoyama period by Raman spectroscopy using different wavelengths. J. Raman Spectrosc., 43: 1699–1706. doi: 10.1002/jrs.4094
- Issue published online: 21 NOV 2012
- Article first published online: 9 NOV 2012
- Manuscript Accepted: 27 MAR 2012
- Manuscript Revised: 26 MAR 2012
- Manuscript Received: 15 DEC 2011
- Portuguese Foundation for Science and Technology
- Namban genre
Museu Nacional Soares dos Reis (Oporto) owns a pair of Japanese folding screens belonging to the early 17th century – Namban genre. As the pieces manifested structural conservation issues, they were subjected to an intervention between 2000 and 2002 in the National Research Institute for Cultural Properties in Tokyo. According to the restoration report, an unknown substance had been applied to the overall surface, adding a glossy finish, as well as some colors inconsistent with the original painting. These materials seem to correspond to a restoration work conducted in the Western countries, but this intervention does not appear neither in the museum records nor in other historical sources.
The aim of this work is to determine the materials used in this restoration work of which very little is known and to understand why these new materials appear in a worse condition of preservation than some of the original ones. Preliminary, in situ , Energy Dispersive X-ray Fluorescence analyses were performed, and right from the beginning, elements such as Cr, Ba, and Co appear in the spectra of orange, yellow, brown, and blue areas, accusing the anachronism of the used materials. Nineteen microsamples were collected to be analyzed with two different confocal Raman equipments using 514, 532, 638, and 785-nm laser sources. Interesting results were obtained for the blue decoration of one of the houses: whereas the energy dispersive X-ray fluorescence spectrum showed the odd combination of Cr, Fe, Co, Cu, and Zn, the Raman spectra indicated mostly the use of Phthalocyanine blue. Copyright © 2012 John Wiley & Sons, Ltd.