Synthesis and Characterisation of Rosiaite for the Needs of Identifying Pigments in Fine Art

Abstract

The paper deals with synthesis and characterisation of rosiaite, PbSb2O6. The powders in high purity were synthetised by solid state reaction in two calcination steps at high temperatures for several hours. Each specimen was characterised by X-ray diffraction analysis and Raman spectroscopy. The colour parameters of L*, a*, b* were calculated from VIS diffuse reflectance spectra and particle size distribution of the samples was evaluated by laser scattering on particles. On n the basis of Raman spectra, PbSb2O6 can be identified in the fine art where Naples yellow was used.