Thermal Gravimetry (TG) and Differential Thermal Analysis (DTA)

Objects of study

Various liquid and solid samples.

Applications

During the continuous programmed heating are defined weight variation (TG) and effects of heat adsorption and evolution (DTA) as a result of various physical and chemical sample transformations.

Instrument facilities

STA-449 (Netzsch, Germany), Q-1500 and C (Hungary) derivatographs with the following characteristics:

• Sample heating from the room temperature to 1000–1500 °C.
• Temperature increment rate from 0.6^o/min to 20°min for Q-1500 and C and to 50°min for STA-449.
• Weight variation is estimated with an accuracy of up to ± 0.1 mg for Q-1500 and C, 0.1% for STA-449; the limits of weight estimation (balance sensitivity) may vary from 20 to 2000 mg.
• Measurement is carried out in the air atmosphere or inert or reductive gas flow.

Weight of the sample (TG), differential temperature (DTA) and weight derivatives are simultaneously and permanently recorded.

Samples requirements

Sample in the form of powder, granules, liquid in the quantity from 5 to 1000 mg.

Leading scientists and their research interests

G.S. Litvak. Hydroxide, oxide and carbon containing systems.