EN
The examination of samples of paint material from the composition in question was conducted with the help of different physico-chemical methods. The pigments were analysed by means of microchemical, microscopic and spectral methods. The X-ray difraction method made it possible to determine variant I of the zinc-lear yellow hue, and infra-red absorption spectphotommetry conformed the presence of azurite. The spectral emmission analysis was implemented for the whole range of colours in the Gothic mural, and it was discovered that arsenic is present in the azurite, and zinc - in the natural Earth pigments. An analysis of samples of binders was conducted with thin-layer chromatography and absorption spectophotometry. It was found that binder used was casein. Chemical methods and microscopic observation of the ground provide information about the quanntitative composition of the binder, the filler and the hydraulic additives. (translated by A. Rodzińska-Chojnowska)