SIMULTANEOUS THERMAL-ANALYSIS OF LARGE SA MPLES

The investigation of wastes, pollutants, contaminated soil, etc. in pr eparation of their thermal disposal or decontamination is related to s everal problems. Due to the heterogeneity of the sample materials, the rmoanalytical measurements, using standard sample amounts of about 20- 50 mg do not lead to reliable results. For this reason, a new thermoan alytical device for about 100 g sample amount was developed. The ''Mac ro STA 419'', was constructed and built for simultaneous TG- and DTA-i nvestigations with direct coupled measuring techniques for gas analysi s (MS/GC-MS). The new developed device is introduced, some problems an d their solutions are discussed and the function of the device is show n.