T. Itthipoonthanakorn¹ , P. Hongpitakpong¹ , M. Sriya¹ , Y. Tumnoi¹

¹Office of Atoms for Peace

Abstract:

Every year during December and January high pressure covers the capital of Thailand and provinces in the central part resulting the air ventilation is limited in vertical direction. Air pollution occurring in Bangkok has been horizontal flown to neighbor provinces including Nakhon Pathom where RN65 located. Very high density of PM2.5 dust has been continuously reported by the Pollution Control Department. Health problems experienced by people due to dust inhalation increased significantly. Internal exposure dose from inhalation of dust attached with natural radionuclides is also expected to be increased in areas of dust pollution. Activity concentrations of natural radionuclides such as 7Be and 212Pb reported in RRR during the period are used for assessing the inhalation dose for people living near the RN65 station. Finally, statistical analysis of 7Be and 212FPb activity concentrations with interesting factors were analysed and reported in this study.