A Móra Ferenc Múzeum Évkönyve, 1969. 2. (Szeged, 1969)

K. Dávid, Péter: Thermoanalytical Study of Human Bone Remains

Since the quality and state of organic components of the bones appears to be in a more exact correlation with the ageing processes of the bones in the soil as the inorganic ones, the following discussion is restricted on the thermal effects only of temperatures lower than 600 C°. In Fig. 1 the DTG curve shows that the Process I. reaches its rate maximum at 120 C° and its end at 220 C°. On the basis of the DTA curve Process I. appears to have endothermic character, since the curve has a slight peak in the endothermic (negative) direction at 120 C°. The beginning of Process II. is marked at 220 C° by the end of Process I. appearing on the DTG curve. The rate maximum of Process II. is at 330 C° and the end is at 380 C°. Process III. does not seem so significant beside Processes II. and I.: as from the DTG curve it is clear. The beginning of Process III. is at 380 C°, the end seems to be in the region of 580°. However the DTA curve shows a defined exothermic (in positive direction oriented) peak in the section of Process III., corresponding with the known combustibility of the bones. Limits of the processes projected from DTG curve onto the TG curve have marked on the ordinate of the TG curve weight decreases which belong to the processes. In this way it is possible the quantitative evaluation of the derivatorgramm and of the process briefly mentioned above. 212 Fig. 1.