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Degradation of lead-based pigments by salt solutions
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SYSNO ASEP 0340400 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Degradation of lead-based pigments by salt solutions Author(s) Kotulanová, Eva (UACH-T)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Hradil, David (UACH-T) RID, SAI
Hradilová, J. (CZ)
Švarcová, Silvie (UACH-T) SAI, RID, ORCID
Grygar, Tomáš (UACH-T)Source Title Journal of Cultural Heritage. - : Elsevier - ISSN 1296-2074
Roč. 10, č. 3 (2009), s. 367-378Number of pages 12 s. Language eng - English Country FR - France Keywords X-ray microdiffraction ; salts ; red lead Subject RIV CA - Inorganic Chemistry R&D Projects GA203/07/1324 GA ČR - Czech Science Foundation (CSF) KJB400320602 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000267909500007 DOI 10.1016/j.culher.2008.11.001 Annotation Interactions of lead-based pigments with a number of inorganic salts, one of the most dangerous degradation agents of wall paintings, were studied under laboratory conditions. The results were used to interpret colour changes observed in 11th century frescoes from the church of Saint George in Kostol'any pod Tribecom, the oldest preserved wall paintings in Slovakia. Interactions of selected pigments (lead white, massicot, red lead) with different salt solutions were performed within long-term laboratory experiments. We used a selection of naturally occurring salts (Na2SO4, MgSO4, CaSO4, NaCl, NaNO3, Ca(NO3)(2), Na2CO3, K2CO3 and urea) and, additionally, a range of synthetic salts that are often applied to the wall paintings during their cleaning and conservation (NaHCO3, KHCO3, (NH4)(2)CO3, NH4HCO3). Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2010
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