Radiological impact of fallout 99Tc in Seville, 1965-1967

From 99Tc concentrations in Seville air, measured previously for a 26 month period in 1965-67, we deduce the amount of intake by inhalation and the following committed dose equivalent to the population using in different ways a compartmental model to describe clearance from the respiratory system. Extremely low values of less than 10(-2) Bq intake per year and a corresponding committed dose equivalent below the nSv are deduced.