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Gewählte Doctoral Thesis:

Franz Kabrt (2019): Radon-Messtechnik und Analyse von Einflussfaktoren auf die Radon- Konzentrationsverteilung in Innenräumen hinsichtlich der Umsetzung der EU Richtlinie 2013/59/EURATOM.
Doctoral Thesis - Institut für Bodenforschung (IBF), BOKU-Universität für Bodenkultur, pp 162. UB BOKU obvsg FullText

Data Source: ZID Abstracts

Abstract:: The radioactive noble gas radon can get inside buildings through diffusion from the soil and emanation from walls. After the inhalation of radon containing air, the radiation, generated by its decay, can directly harm the lung's tissue. The WHO identifies radon and its progenies as the greatest cause for lung cancer after smoking. Measurements of the radon activity concentration in soil gas, the soil's permeability, the activity concentration of radium of the soil and the ambient dose rate above the ground as well as the indoor radon activity concentration in buildings were carried out Austria. The measurement results are compared with each other to identify correlations. Between uranium and radium a comparatively high correlation was found, as expected. The correlation coefficient between radium and radon is lower. By interpolation of the Radon activity concentration in soil gas at the locations of the indoor measurements, a prediction of whether the indoor activity concentration falls below or exceeds the threshold is attempted. Up to 64 % predictions made are correct using this method. The quotient between the Radon activity concentration in soil gas and indoors shows a correlation to indoor activity concentrations exceeding the threshold. In order to estimate the influence of radium containing building materials on the indoor radon activity concentration, a simplified measurement method for the evaluation of the radon emanation has been developed. Pulverised material is put into a desiccator together with a passive radon detector. The emanation of the material can be calculated by the exposure of the detector and the build-up curve of radon within the desiccator. The radon potential and measurements of building materials are appropriate for estimating the radon activity concentration in buildings. Factors of influence and their degree can be identified, in order to implement the EU directive in a purposeful way.; Betreuer: Maringer Franz Josef; 1. Berater: Gerzabek Martin; 2. Berater: