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Erschienen in:
2007 | OriginalPaper | Buchkapitel
Instruments for Thermogravimetric Measurements
Erschienen in: Thermal Decomposition of Solids and Melts
Verlag: Springer Netherlands
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Thermogravimetric analysis (TGA or TG) is one of the most widely used methods of TA. With this method, changes in the sample mass, maintained in a specified atmosphere, can be monitored during heating, cooling, or being kept at a constant temperature. For most reactants, the sample mass decreases as a result of evaporation of the adsorbed or chemically bound water, pyrolysis of organic substances, and decomposition or evaporation of the material. For some samples in some atmospheres, the sample mass increases owing to, e.g., oxidation of metals to oxides or carbonation of oxides.