Markes Unity thermal desorption unit in combination with a Interscience DSQ quadrupole mass spectrometer
Thermal desorption is a sample introduction technique for the identification and quantitative determination of volatile compounds.
Volatile compounds are collected on a suitable solid adsorbent (e.g. tenax, multilayer adsorbent) using a personal sample pumps.
The adsorbent tube is introduced in a thermal desorption unit. The collected volatiles are thermally desorbed in an inert (He) atmosphere and volatiles are transferred to a cooled cryo-trap for focusing before transfer to a GC/MS apparatus.
- Analysis of off-gassing or off-odour problems
- Analysis of VOC and fogging in plastics (VDA278)
- Analysis of rest solvents and rest monomers in printing inks and glues
- Analysis of released volatiles during thermoforming processes.