evolved gas analysis


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evolved gas analysis

[ē¦välvd ′gas ə‚nal·ə·səs]
(analytical chemistry)
An analytical technique in which the characteristics or the amount of volatile products released by a substance and its reaction products are determined as a function of temperature while the sample is subjected to a series of controlled temperature changes. Abbreviated EGA.
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lot 1: thermogravimetric analyser with evolved gas analysis by gas chromatography-mass spectrometry (TGA-MS),
Many of the units are suited for evolved gas analysis and feature a small sample environmental chamber for accurate atmosphere control.
The Cahn TGA is said to be ideal for evolved gas analysis (EGA), due to integrated design (TG-IR, TG-MS, TG-GC/MS).
Further, by combining TGA with an evolved gas analysis system such as mass spectrometry (MS), an analysis of the composition of the evolved gaseous product can now be obtained.
Quadrupole Mass Spectrometer for Evolved gas analysis (TGQMS),Differential Scanning Calorimeter (DSC)