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Lead soaps in paintings: symptoms and the role of humidity
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SYSNO ASEP 0538352 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Lead soaps in paintings: symptoms and the role of humidity Author(s) Garrappa, Silvia (UACH-T) ORCID, RID, SAI
Švarcová, Silvie (UACH-T) SAI, RID, ORCID
Kočí, Eva (UACH-T) SAI, RID
Hradilová, J. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Hradil, David (UACH-T) RID, SAIIssue data Prague: Academy of Fine Arts in Prague, 2020 ISBN 978-80-88366-14-0 Source Title ACTA ARTIS ACADEMICA 2020 : The Colour Theme. - Prague : Academy of Fine Arts, 2020 / Hradil David ; Hradilová J. ; Švarcová Silvie ; Kočí Eva - ISBN 978-80-88366-14-0 Pages s. 55-68 Number of pages 14 s. Publication form Print - P Action Interdisciplinary ALMA Conference /7./ Event date 16.10.2019 - 18.10.2019 VEvent location Bratislava Country SK - Slovakia Event type EUR Language eng - English Country CZ - Czech Republic Keywords lead soaps ; paintings ; oil ; egg yolk ; humidity Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry Institutional support UACH-T - RVO:61388980 UT WOS 000646188900004 Annotation In this study, an overview of the symptoms of lead soaps reported in artworks in combination
with the study of the role of humidity on the formation of these degradation products have
been thoroughly investigated. The use of optical microscopy, scanning electron microscopy
(SEM) in combination with Fourier-transform infrared spectroscopy (FTIR) proved to be an
efficient analytical approach to highlight both the saponified area of artworks’ samples and the
formation of metal carboxylates within mock-up model systems. Optical microscopy revealed
to be very useful for the first screening of samples embedded in resin, while SEM helped in
the detection and distribution of elements within the cross-sections. On the other hand, FTIR
microscope proved to be a very powerful instrument for high-resolution point measurements
performed in the attenuated total reflection mode (ATR) mode with mercury-cadmium-telluride
(MCT) detector, as well as for chemical imaging of larger area of both artworks’ and mock-up
samples performed in the ATR mode with focal plane arrays (FPA) detector. This study provides
new useful insights contributing to better understanding of factors affecting the paints‘ stability,
which is neccesary for developing new efficient strategies for preservation and restoration of
fatty-based painted artworks.Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2022
Number of the records: 1