Journal
TALANTA
Volume 79, Issue 2, Pages 419-428Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2009.04.005
Keywords
Synchrotron radiation; XRD; FTIR; Metal carboxylates; Oxalates; Gothic paintings; Artwork
Categories
Funding
- EU [EC-69]
- Swiss/Norwegian CRIS [16-01-690 (]
- SRS Daresbury Laboratory [43195, 45256, 49140]
- Museu Nacional d'Art de Catalunya (MNAC)
- Technical University of Catalonia (UPC)
- Ministerio de Ciencia y Tecnologia (Spain) [Hum2006-02642]
- Generalitat de Catalunya [2005SGR00201]
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Synchrotron radiation X-ray diffraction (mu-SR-XRD) and Fourier transform infrared spectroscopy (mu-SR-FTIR) are used in the non-destructive identification of reaction and aging compounds from micrometric ancient painting layers. The combination of the micrometer size and non-destructive nature of the techniques together with the high resolution and brilliance of the synchrotron radiation has proved to be a procedure most advantageous for the study of reaction, aging and degradation processes. Copper, lead and calcium carboxylates and oxalates are determined in the chromatic, preparation and alteration layers from 15th century egg tempera and oil paintings. Their nature and crystallinity have been assessed. Some hypothesis about the mechanisms of development of both carboxylates and oxalates are presented. (C) 2009 Elsevier B.V. All rights reserved.
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