Preliminary Population Exposure to Indoor Radon and Thoron in Dhaka City, Bangladesh

Radon, an element of natural radiation, is considered one the leading causes lung cancer worldwide. In Bangladesh, radon has been clarified as a foremost source radiation exposure. Potential natural-radiation-induced elevated risks were estimated in Bangladesh previously for population. this survey, very preliminary study country, comparative indoor (222Rn, Rn) and thoron (220Rn, Tn) concentration/population exposure was determined multistoried dwellings south-western areas Dhaka city. RADUET used to assess annual Rn Tn concentrations determining primary inhalation dose The effective evaluated at 0.3 mSvy−1, constituting contribution average 40% with dwelling-based wide range 10–96%. Thus, should not be neglected while estimating radiological from environment. Again, equilibrium factors, F Tn, by short-term measurement averages 0.6 0.02, respectively. Furthermore, using questionnaire estimation principal component analysis, PCA following dwelling characteristics, human lifestyles, long-term concentrations, paper discussed atmospheric/Rn factors investigated