Device for monitoring of chemical substances in the flue gas

Device for monitoring of chemical substances in the flue gas, comprising: a first conduit (4) for taking a gas sample from the flue gas, a first and a second switching valve (82a, 82b), one after the other in the first conduit (4) are arranged, a between the first and the second switching valve (82a, 82b) extending second line, means disposed in said second conduit means (83) to the concentration of dioxins from the sample gas containing a plurality of columns (83) each for the adsorption of dioxins, a in the second conduit between the first valve (82a) and the means (83) to the concentration of dioxins provided a third switching valve (84), a changeover valve with the third (84) source associated (85) for a gas for purging the respective columns (83), a downstream of the second switching valve (82b) connected to the first lead ion source (30) for ionizing the sample gas, and a mass spectrometer (93) for mass analysis of the ions from the source ...