Indoor Air Quality in Fifty Residences in Athens

AbstractMeasurements of indoor air pollutants covering the concentrations of CO2, CO, TVOC’s, PM2.5, and PM10were performed in 50 residences in Athens. In addition the ventilation rate in each dwelling was continuously measured by monitoring CO2 concentration. Apart from carbon monoxide, almost all the remaining pollutants showed high concentrations that exceeded the maximum threshold levels of the relevant standards. The rate of ventilation was found to have a very important impact on the concentration of indoor pollutants. Finally, the impact of tobacco smoking was found to be very important and the concentration of almost all pollutants increased significantly when the rate of smoking increased.