Development and application of a quasi-continuously working system for measuring the immission of acid air pollutants like HCl, NO2 and SO2 using an absorber tube

Main objective of this study during the report time is found to be the testing of different absorption materials for the simultaneous determination of acid gaseous pollutants like HCl, NO2 and SO2. These materials - so-called active collectors - were examined in laboratory-scale experiments using gas mixtures with various concentrations of the pollutants which should be chemisorbed by the active collectors. After eluation of the active collector and ion chromatographical analysis of the solutions informations about the absorption/desorption rate are obtained. In most cases adsorption were tested on which amino-functional groups are deposited by chemical reaction. The amino-groups act as reactive sites for the chemisorption of the acid gases. It can be observed that all tested materials are suitable for the measurement of HCl and SO2. Additionally some types of absorption materials are effective for the simultaneous absorption of HCl, SO2 and NO2. (orig.). 25 figs., 21 tabs., 66 refs