Synthetic organic colorants in the assessment of an artwork’s authenticity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023281%3A_____%2F19%3AN0000032" target="_blank" >RIV/00023281:_____/19:N0000032 - isvavai.cz</a>
Result on the web
<a href="https://www.uva.nl/en/shared-content/faculteiten/en/faculteit-der-geesteswetenschappen/events/conferences/2019/11/dyes-in-history-and-archaeology.html?1583395390984" target="_blank" >https://www.uva.nl/en/shared-content/faculteiten/en/faculteit-der-geesteswetenschappen/events/conferences/2019/11/dyes-in-history-and-archaeology.html?1583395390984</a>
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Synthetic organic colorants in the assessment of an artwork’s authenticity
Original language description
Scientific analysis, including identification of pigments and dyes, is an integral part of the assessment of an artwork’s authenticity. The presence of materials produced after expected time of origin gives a sign that the artwork is suspicious at least. First organic pigments were synthetized in the late 19th century and more commercially important classes were discovered throughout the 20th century. Raman and infrared spectroscopy are suitable methods for identification of most organic colorants. Phtalocyanine pigments are quite often found on fake artworks however other pigments like quinacridone reds and arylide yellows were identified as well. Nevertheless, sample analysis showed wide range of organic colorants applied on the original artworks from the first half of the 20th century too. Therefore, unambiguous identification is necessary for correct assessment of the authenticity.
Czech name
—
Czech description
—
Classification
Type
O - Miscellaneous
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/VI20172020050" target="_blank" >VI20172020050: Comprehensive Instrumental Methods for the Assessment of an Artwork's Authenticity, a Material Database of the 20th century</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů