TG-EGA is used for simultaneous thermo-gravimetric and chemical analysis of a sample. In the TG-EGA technique, the evolved gases from controlled heating of a sample are routed to an Evolved Gas Analysis (EGA) system, which may use FTIR, MS or GC-MS for compositional analysis.
TG-EGA is a hyphenated technique for simultaneous thermo-gravimetric and chemical analysis of a sample. Thermogravimetric analysis is performed using a Thermogravimetric Analyzer (TGA) or Thermobalance, to continuously measure the change in mass of a sample subjected to a controlled heating program. The reduction in mass occurs due to the evolution of gases (including volatile molecules), during processes such as evaporation, decomposition or outgassing of inclusions. In the TG-EGA method, the evolved gases are simultaneously routed to an Evolved Gas Analysis (EGA) system. The EGA system can utilize a variety of techniques such as Fourier Transform Infrared spectroscopy (FTIR), Mass Spectrometry (MS) or combination of MS with gas chromatography (GC-MS). This enables identification of the evolved gas components and real time correlation with the mass change data from TGA. TG-EGA enables chemical fingerprinting of the volatile components and thermal decomposition products of a sample, along with a real-time, mass balance.
Common Uses of TG-EGA
Advantages of TG-EGA
Limitations of TG-EGA
Industrial Applications of TG-EGA
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