Počet záznamů: 1

Non-invasive identification of lead soaps in painted miniatures

SYSNO ASEP	0533696
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Non-invasive identification of lead soaps in painted miniatures
Tvůrce(i)	Garrappa, Silvia (UACH-T)_{ORCID, RID, SAI} Hradil, David (UACH-T)_{RID, SAI} Hradilová, J. (CZ) Kočí, Eva (UACH-T)_{SAI, RID} Pech, M. (CZ) Bezdička, Petr (UACH-T)_{SAI, RID, ORCID} Švarcová, Silvie (UACH-T)_{SAI, RID, ORCID}
Celkový počet autorů	7
Zdroj.dok.	Analytical and Bioanalytical Chemistry. - : Springer - ISSN 1618-2642 Roč. 413, č. 1 (2021), s. 263-278
Poč.str.	16 s.
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	Metal soaps ; Miniature paintings ; Non-invasive analysis ; Spectroscopy ; X-ray diffraction ; X-ray fluorescence
Vědní obor RIV	CA - Anorganická chemie
Obor OECD	Inorganic and nuclear chemistry
CEP	GA17-15621S GA ČR - Grantová agentura ČR
	DG18P02OVV034 GA MK - Ministerstvo kultury
Způsob publikování	Open access s časovým embargem (01.01.2022)
Institucionální podpora	UACH-T - RVO:61388980
UT WOS	000581694200001
EID SCOPUS	85092697258
DOI	10.1007/s00216-020-02998-7
Anotace	The lack of an appropriate methodology makes numerous important issues related to miniature paintings unresolved—despite the fact that the portrait miniatures of the seventeenth to the nineteenth century represent a highly specific and significant field of European fine art. One of these issues is represented by chemical degradation of miniatures and its analytical evidence. Fragility, variability of the employed materials, and detailed execution make their analysis highly challenging—since no sampling is usually allowed and any change on their surface is immediately noticeable. Therefore, this study focused on finding a fully non-invasive multi-analytical approach to describe degradation processes resulting from the interaction of lead pigments and oils. For this purpose, a representative set of miniature portraits on various supports (ivory, metal, glass) has been selected. For the first time, Pb carboxylates (lead soaps) have been evidenced in miniatures painted in oil and also in a combined technique (gum + oil). Their distribution and crystallinity was described by a combination of X-ray-based (X-ray fluorescence and X-ray diffraction) and micro-spectroscopic methods. At the same time, a number of new findings about the employed painting technique and involvement of various pigments in the degradation processes were obtained. For example, a possible saponification of a mixed Pb-Sn-Sb yellow was indicated for the first time. Although the degradation is clearly at an advanced stage, it has not shown yet any visible symptoms that might warn restorers and curators. Therefore, without targeted analysis, it would remain overlooked.
Pracoviště	Ústav anorganické chemie
Kontakt	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Rok sběru	2021
Elektronická adresa	http://hdl.handle.net/11104/0316536

Počet záznamů: 1