TY - CONF A1 - Hofmann, Michael A1 - Richter, Matthias A1 - Jann, Oliver T1 - Determination of radon exhalation from building materials in dynamically operated test chambers by use of commercially available measuring devices T2 - Healthy Buildings Europe 2015 N2 - The inhalation of radon (222Rn) decay products is the leading cause of lung cancer apart from tobacco smoking. Besides the permeation of radon from the subsoil through the basement as main source of radon in indoor air, also building materials have to be taken into consideration, especially at low air change rates in buildings. The Construction Products Regulation (EC, 2010) gives essential requirements for construction works regarding the release of dangerous substances such as toxic gases and radiation to which radon can be assigned. The recently adopted Basic Safety Standards Directive (EC, 2013), which has to be ratified by each European member state in between the next three years sets reference levels for indoor radon concentrations for the first time. In research project financed by the German Ministry for the Environment, Nature Conservation, Building and Nuclear Safety a practical, reliable and easily applicable test procedure for the determination of radon exhalation from building materials – based on ISO 16000-9 (ISO, 2006) and CEN/TS 16516 (CEN, 2013) – should be developed. In contrast to the static test procedure published by Richter et al. (2013), dynamically operated test chambers shall be foregrounded. First results of this study are presented, focused on the reliable measurement of radon background concentration and the selection of suitable radon test devices, representing the basic elements of the subsequent work. T2 - Healthy Buildings Europe 2015 CY - Eindhoven, The Netherlands DA - 18.05.2015 KW - Radon exhalation KW - Building material KW - VOC emission test chamber KW - Radon measurement PY - 2015 SN - 978-90-386-3889-8 SP - Paper 552, 1 EP - 3 AN - OPUS4-35011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -