Gold nanoparticles in painted miniatures on ivory: Non-invasive evidence and characterisation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F23%3A00567425" target="_blank" >RIV/61388980:_____/23:00567425 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.dyepig.2022.111015" target="_blank" >https://doi.org/10.1016/j.dyepig.2022.111015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.dyepig.2022.111015" target="_blank" >10.1016/j.dyepig.2022.111015</a>

Result language
angličtina
Original language name
Gold nanoparticles in painted miniatures on ivory: Non-invasive evidence and characterisation
Original language description
To document the use of gold nanoparticles (also known as ˝Purple of Cassius˝ pigment) in miniature painting, seven 19th century portraits from Czech collections containing purple colour were studied. The research was performed non-invasively, as it was not possible to sample the small-sized and delicate paintings. Large area X-ray fluorescence scanning indicated the presence of Purple of Cassius in four paintings, while in the three of them, the desired shade was achieved by mixing red and blue pigments, for example vermillion and Prussian blue. The detected gold nanoparticles were characterised in detail by X-ray powder diffraction and via innovative use of environmental scanning electron microscopy. The obtained diffraction patterns enabled the calculation of average size of the particles, which equalled to 8-14 nm. Based on available historical recipes, the pigment preparation was replicated in laboratory, yielding analogous pigment with similar particle size. For the first time, Purple of Cassius was identified and characterised in portrait miniatures.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry

Project
<a href="/en/project/DG18P02OVV034" target="_blank" >DG18P02OVV034: Non-invasive research of portrait miniatures for the purpose of their dating, authentication, presentation and protection</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)