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"

The organic material content of ground MI was examined from the sample 2 and 4. The C—O—C band at 1170 cml and C = 0 at 1730 cm—

1 wavenumbers show the presence of esters with long chain (the band at 730 cm-l) m the infrared spectrum of sample 2. The mass spectrum of this sample (Fig. 3) has molecular ions (molecular mass 592, 620, 648, 676, 704) probably with a composition of the following esters Cn^2n+1~ COO-C

m

fi"2m+l where n = 19, 21, 23, and m = 20,22,24. The molecular ions of esters with smaller molecular mass (452), acids (256, 368 with carbonatom number of 16 and 24), and hydrocarbons (C

n

H2n+2 with molecular mass 422, 436) can be found in the spectrum too. 1 8B0 t IBB 1B8B t = £ *5 256 a.ee <22 150 200 3© ~43ß Ű.00 2S0 300 350 ^80 «SOrVE L2.O0 620 643 676 450 500 550 668 &5Ö 186 T50 800^ .00 Fig. 3 Mass spectrum of sample 2 EH H 1000-, 248 JEB 2CG 136 m 22D ZA i 256 J , 3Œ 368 0 I'.'.'... 1

17 ' "• 1 ". T

; '"•'"« " 1""' "I [ I • i i • I I I . I i". i 1 • 50 100 150 200 250 300 350 400H/T 1000 - 456 Jso «S.0 H CO -I d 431 Oil L.'l 592 620 676 1 1 648 I t p i iTi 111 \ 11 » t r 704 *H i • •• i • • • r> i » r-1 n M» 111 r'» i r • i tT p 11 Ti n i ptrPTn |U'iun H 400 450 500 550 600 650 100 150^ Fig. 4 Mass spectrum of the sample-part dissolved in chloroform (from sample 2)