The sample is placed in the thermogravimetric analyzer, and the temperature is first raised in the inert atmosphere to fully release the gas products of water and decomposable inorganic salts from the sample; after cooling, the atmosphere is switched to an oxidizing atmosphere and the temperature is raised again to allow the carbon to be fully burned. The maximum weight loss in the oxidizing atmosphere is used to determine the carbon content in fly ash.
T/CAIA SHO20-2024 history
2024T/CAIA SHO20-2024 Fly ash Determination of carbon content Thermogravimetric method