Indoor radon measurement in some apartments

Environmental monitoring and indoor radon measurement are important for health life to give advises to the people in order to reduce the cancer risk of respiratory system. In the present research, radon concentration in the air has been measured at indoor of 40 apartments in Mashhad city with PRASSI system. Most of people close the doors and windows during the cold days in winter and use natural gas as fuel and other household usage. So, the radon concentration level increases as we expect. The result demonstrates about 35% of apartments have radon level low than the normal level (48 Bq/m3) and more than 65% have high radon concentration. We suggest reducing radon level at homes by suitable simple ventilation systems.