Unique Pre-Romanesque murals in Kostol'any pod Tríbečom, Slovakia: The painting technique and causes of damage

0395016 - ÚACH 2014 RIV GB eng J - Journal Article
Hradil, David - Hradilová, J. - Kočí, Eva - Švarcová, Silvie - Bezdička, Petr - Maříková-Kubková, Jana
Unique Pre-Romanesque murals in Kostol'any pod Tríbečom, Slovakia: The painting technique and causes of damage.
Archaeometry. Roč. 55, č. 4 (2013), s. 691-706. ISSN 0003-813X. E-ISSN 1475-4754
Institutional support: RVO:61388980 ; RVO:67985912
Keywords : Pre-Romanesque murals * painting materials analysis, * degradation of pigments * portable X-ray fluorescence * X-ray microdifraction
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 1.328, year: 2013

Pre-Romanesque murals at Kostol'any pod Tríbečom, Slovakia, have been investigated by portable X-ray fluorescence and by microanalytical methods to identify painting materials (pigments and binders), and to explain the degradation of colours. Today, missing green and blue shades have been reconstructed according to residual concentrations of Cu, which correspond to copper chlorides-products of salt corrosion of the copper carbonates azurite and/or malachite, accelerated by micro-organisms. As confirmed by powder X-ray microdifraction, original minium (Pb3O4) has been transformed to brown-black plattnerite (PbO2). In increased humidity, even insoluble pigments are washing down from the wall and the intensity of colours further diminishes.
Permanent Link: http://hdl.handle.net/11104/0223182