Compositional analysis thermogravimetry TG

In thermogravimetric analysis (TGA), the change in mass of a sample is monitored as the sample is heated. 

When a compound crystallizes from solution, the crystals may contain solvent of crystallization. The compound is then called a solvate, and if the solvent is water, the compound is a hydrate. The presence of the solvent is revealed by elemental analysis, and thermogravimetric analysis (TGA) shows whether the solvent molecules are loosely or strongly bound in the crystal lattice. More generally, TGA is used to investigate the thermal degradation of inorganic compounds or polymers or the gas uptake of a solid (e.g. H2 uptake by WO3). A TGA instrument is able to simultaneously heat (at a constant rate) and record the mass of a sample. Samples are usually heated in air or N2, or in an 

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