M. Járó - L. Költő szerk.: Archaeometrical research in Hungary (Budapest, 1988)

Analysis - WITTMANN Zsuzsa, BÉLAFI-RÉTI Katalin, DÉCSY Zoltán, ERDŐHALMI-TÖRÖK Klára, KISS—BENDEFY Márta, VASSÁNYI István, VELLEDITS Lajos: Examination of painting materials used by Mihály Munkácsy for his painting "Studio"

] . 02 1.015 1 .Cl 1 . 005 1 . 0 0. 995 0. 99 ß. 905 0.90 0.975 B. 97 E. 965 0. 96 C. 955 0.95 0. 945 2. 94 0. 935 0. 93 0. 925 0. 92 IN en 4000 3500 300D 2500 20 Q0 WPVENUKBERS CM-1 1500 1003 500 Fig. 8 Infrared spectrum of the rest of the sample-part not dissolved in chloroform after measuring by mass spectrometry The brown colour of the beeswax is given by propolis [beeswax contains 2—3%(w/w)] consisting of esters, acids, alcohols, aromatic compounds and unidentified organic compounds with great molecular mass. There was a remainder in the sampleholder after having taken the spectrum of propolis, too. It is not so probable that the beeswax in the home-made or bought ground II was bleached. Whether the remainder of the propolis may have been found in the sample part not dissolved in chloroform after measuring by mass spectrometry? This theory has to be proved by further examinations. 4.1.3. Examinations by staining cross sections The samples were embedded into Poly-Pol PS 230 resin, and silicon carbide papers were used for grinding [9]. The cross sections were examined under the microscope, and the staining tests were performed in accordance with the method detailed in Ref.[6]. Only the canvas and the lowest thin layer of ground I gave a positive proteintest (Amido black AB 2, Fuchsin) because of the glueing of the canvas (Fig. 1). The oil test (Sudan black B) was positive in ground I and in the paint layers. 4.2. Analysis of the inorganic content of the samples 4.2.1 Examination methods The contents of the most important metals in the samples were analysed by X-ray flourescence spectrometry in order to obtain prehminary information.