Počet záznamů: 1
Non-destructive micro-analytical differentiation of copper pigments in paint layers of works of art using laboratory-based techniques
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SYSNO ASEP 0429222 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Non-destructive micro-analytical differentiation of copper pigments in paint layers of works of art using laboratory-based techniques Tvůrce(i) Švarcová, Silvie (UACH-T) SAI, RID, ORCID
Čermáková, Zdeňka (UACH-T) SAI
Hradilová, J. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Hradil, David (UACH-T) RID, SAIZdroj.dok. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. - : Elsevier - ISSN 1386-1425
Roč. 132, NOV (2014), s. 514-525Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Copper pigments ; Infrared spectroscopy ; Microanalysis ; Model experiments ; Paintings ; Powder X-ray micro-diffraction Vědní obor RIV CA - Anorganická chemie Institucionální podpora UACH-T - RVO:61388980 UT WOS 000340330800061 EID SCOPUS 84901827418 DOI 10.1016/j.saa.2014.05.022 Anotace An unambiguous identification of pigments in paint layers of works of art forms a substantial part of the description of a painting technique, which is essential for the evaluation of the work of art including determination of the period and/or region of its creation as well as its attribution to a workshop or an author. Copper pigments represent a significant group of materials used in historic paintings. Because of their substantial diversity and, on the other hand, similarity, their identification and differentiation is a challenging task. An analytical procedure for unambiguous determination of both mineral-type (azurite, malachite, posnjakite, atacamite, etc.) and verdigris-type (copper acetates) copper pigments in the paint layers is presented, including light microscopy under VIS and UV light, electron microscopy with elemental microanalysis, Fourier transformed infrared micro-spectroscopy (micro-FTIR), and X-ray powder micro-diffraction (micro-XRD). Micro-Raman measurements were largely hindered by fluorescence. The choice of the analytical methods meets the contemporary requirement of a detailed description of various components in heterogeneous and minute samples of paint layers without their destruction. It is beneficial to use the combination of phase sensitive methods such as micro-FTIR and micro-XRD, because it allows the identification of both mineral-type and verdigris-type copper pigments in one paint layer. In addition, preliminary results concerning the study of the loss of crystallinity of verdigris-type pigments in proteinaceous binding media and the effect of lead white and lead tin yellow as highly absorbing matrix on verdigris identification in paint layers are reported. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2015
Počet záznamů: 1