PROTECTION OF ADSORPTION TUBES AGAINST CONTAMINATION

Abstract

For the analysis of dangerous substances of unknown compounds in the
air is in the Fire and Rescue Service established a procedure, based on sampling
of air samples by means of sucking through Tenax adsorption tube, the release of
the captured substances in thermodesorption equipment and their subsequent
analysis in a gas chromatograph with mass spectrometer. The procedure is simple,
effective and highly sensitive. High sensitivity nevertheless brings significant
interference caused by contamination of tubes stored in the reconnaissance
vehicles and transported to the sampling points. The result of this study of tube
contamination is the method of optimal protection of the Tenax tubes. This method
ensures the reduction of Tenax tubes contamination by volatile substances during
the storage, transport and handling to an acceptable minimum.