Experiments and calculations on the adsorption of radioactive elemental iodine gas on aerosol

The deposition velocity of radioactive elemental iodine (I2) gas from air to vegetation is about five times faster than that of iodine attached to particulate matter (i.e. particulate iodine). In the environment, a fraction of radioactive I2 released from nuclear facilities is likely to adsorb on the atmospheric aerosol. The adsorption of I2 onto various aerosols was studied in order to provide basic data for the realistic and precise assessment of the internal dose to man from radioiodine in the food chain. The influence of I2 gas concentration and reaction time on the adsorption amount of I2 onto burnt incense-stick fume and fly-ash aerosol was investigated experimentally and was also analyzed theoretically