Analysis of organic colouring and binding components in colour layer of art works
1.
SYSNO ASEP
0030015
Document Type
J - Journal Article
R&D Document Type
Journal Article
Subsidiary J
Ostatní články
Title
Analysis of organic colouring and binding components in colour layer of art works
Title
Byly testovány dvě analytické metody pro analýzu organických složek barevné vrstvy uměleckých děl
Author(s)
Kučková, Š. (CZ) Němec, I. (CZ) Hynek, R. (CZ) Hradilová, J. (CZ) Grygar, Tomáš (UACH-T)
Source Title
Analytical and Bioanalytical Chemistry. - : Springer
- ISSN 1618-2642
Roč. 382, č. 2 (2005), s. 275-282
Number of pages
8 s.
Language
eng - English
Country
DE - Germany
Keywords
proteins ; binders ; painting
Subject RIV
CA - Inorganic Chemistry
R&D Projects
GA203/04/2091 GA ČR - Czech Science Foundation (CSF)
CEZ
AV0Z40320502 - UACH-T (2005-2011)
Annotation
Two methods of analysis of organic components of colour layers of art works were tested: IR microspectroscopy of indigo, Cu-phthalocyanine, and Prussian blue, and MALDI-TOF-MS of proteinaceous binders and one protein-containing red dye. The IR spectra distortion common for smooth outer surfaces and polished cross sections of colour layer of art works was suppressed by reflectance measurement of microtome slices. The sensitivity was sufficient to identify Prussian blue in a repaint on a Gothic painting. MALDI-TOF-MS was also proposed for identification of one insect red, cochineal carmine, according to its specific protein component. The enzymatic cleavage with trypsin before MALDI-TOF-MS seems to be a very gentle and specific way of dissolution of the colour layers highly polymerised due to very long aging of medieval samples.
Workplace
Institute of Inorganic Chemistry
Contact
Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing
2006
Number of the records: 1
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