Variability of indoor and outdoor gaseous aerosol precursorsVariability of indoor and outdoor gaseous aerosol precursors Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-112009enMeasurements of indoor and outdoor aerosol concentrations and their gaseous precursors (O3, NO and NO2) as well as volatile organic compounds (VOCs) concentrations were performed at two houses in the Oslo metropolitan area. The variability of the concentration of gaseous compounds was studied in respect to their sources in the indoor and outdoor environments. Domestic heating during the winter and photochemical production during the summer were the main sources for outdoor NOx and O3. In the indoor environment infiltration of outdoor air, candle burning, smoking and indoor chemical reactions were the main sources affecting their concentrations. The concentrations of VOCs outdoors were enhanced during the summer due to biogenic emissions whereas in the indoor environment their values were affected mostly by emissions from materials used during the recent refurbishing of the houses (>0.4 mg/m3).http://creativecommons.org/licenses/by/4.0/Water Air and Soil Pollution193-13 Lazaridis Michalis Λαζαριδης Μιχαλης Alexandropoulou ,V Springer Verlag Air--Pollution--Control Air contaminants Air pollutants Air pollution Air pollution control Air toxics Airborne pollutants Atmosphere--Pollution Contaminants, Air Control of air pollution Pollutants, Air Toxics, Air air pollution air pollution control air contaminants air pollutants air toxics airborne pollutants atmosphere pollution contaminants air control of air pollution pollutants air toxics air