Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/13712
|
| Title: | PROBLEMS OF ANALYSIS BY FTIR OF CALCIUM SULPHATE–BASED PREPARATORY LAYERS: THE CASE OF A GROUP OF 16TH-CENTURY PORTUGUESE PAINTINGS |
| Authors: | Melo, H
Cruz, AJ
Candeias, A
Mirao, J
cardoso, AM
Oliveira, MJ
Valadas, S |
| Issue Date: | 2014 |
| Publisher: | University of Oxford |
| Citation: | Melo, H. P.; Cruz, A. J.; Candeias, A.; Mirão, J.; Cardoso, A. M.; Oliveira, M. J. & Valadas, S. (2014), Problems of Analysis by FTIR of Calcium Sulphate–Based Preparatory Layers: The Case of a Group of 16th-Century Portuguese Paintings: The Case of a Group of 16th-Century Portuguese Paintings, Archaeometry 56(3), 513-526. |
| Abstract: | This paper provides a contribution to FTIR analysis of calcium sulphate-based grounds of
paintings when a mixture of compounds with different degrees of hydration is present. The
study is based on the analysis with that technique, electron microscopy coupled with energydispersive
X-ray spectrometry and X-ray diffraction of both the grounds of 16th-century
Portuguese paintings and reference samples prepared with anhydrite and calcium sulphate
dihydrate bound in an animal glue solution. It is shown that the interpretation of the degree of
hydration of calcium sulphate ground samples using FTIR cannot be based solely on the study
of the hydroxyl bands, as is usual in routine work, but that small deviations of the S–O
vibration bands are an important indicator of the presence of anhydrite in the grounds. |
| URI: | http://hdl.handle.net/10174/13712 |
| Type: | article |
| Appears in Collections: | QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
/
Departamento de Química /
QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica /
