MESSANLAGE ZUR PHYSIKALISCHEN, BIOLOGISCHEN UND RADIOOKOLOGISCHEN BEWERTUNG DER LUFTQUALITAT

Evaluation of air quality requires generally the application of expensive and little mobile measuring apparatuses (e.g. URAS, RMA, mass spectrometer). The method described below is a combination of filter-, gas chromatographic analysis and radioactivity detection. Normal air is used as carrier gas and its emission of pollution is measured by means of a specially pretreated thermal simiconductor detector. The entrance filter retains particular air impurities up to a size of 0.02 μm. The filter can either be investigated by conventional trace analysis techniques where the deposits are quantified, or the biological activity of the deposits can be determined by means of the electron microscope and by immunohistochemical techniques. An identification of the radioactive contamination is also possible with suitable detectors. The filters can be directly evaluated if the electron microscope is equipped with EDX or EELS and a supplementary apparatus. The concentrations of the gaseous, oxidable air contamination are determined by means of a semiconductor detector. The entire conception of the measuring system allows a simple and mobile installation so that it is suited as a single or network system (computer network with an interface) for environmental and biomonitoring.