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THERMOGRAVIMETRIC ANALYSIS/MASS SPECTROSCOPY

 

TA Instruments Q5000 coupled with Pfeiffer ThermoStar quadrupole mass spectrometer

Thermogravimetry - mass spectrometry is a hyphenated thermal analytical technique in which released volatiles from a thermobalance (see TGA) are transferred through a heated fused silica tubing (300°C ) towards a dedicated quadrupole mass spectrometer (see MS) as detector.
During the TGA experiment mass spectra are continuously accumulated as a function of temperature (time).  Mass spectra or better mass kinetograms of clusters of specific mass-ions allow identifying classes of components with the mass losses of the thermobalance within a certain temperature range.  TGA/MS experiments can be performed in an inert (He, N2) or oxidative (air, O2) atmosphere.


Typical applications

  • Simulation of a incineration or pyrolysis process.
  • Identification and quantification of the volatiles released during a thermal process (incineration and/or pyrolysis).
  • Identification and quantitative analysis of the volatiles released during thermoformation processes (e.g. extrusion).
  • Evolved gas analysis.