Doses with α-particles of plutonium anthropogenic radioisotopes to the Black Sea hydrobionts

The A.O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), NAS Ukraine, Prospekt Nakhimova 2, Sevastopol 99011, Ukraine

Abstract

The data on assessment of the irradiation doses of the Chernobyl ^239,240Pu to the Black Sea hydrobionts of different trophic levels are presented. The rates of adsorbed doses of internal irradiation from the alpha-radiation of incorporated ^239,240Pu to the Black Sea hydrobionts varied from 0.01 to 0.354 µGy ⋅ years^-1 Comparative analysis of dose levels formed with ^239,240Pu to studied hydrobionts of the Black Sea in this work and doses formed with natural alpha-emitting radionuclide of ²¹⁰Po showed that ^239,240Pu irradiation doses are 10³–10⁴ times lower, than irradiation doses with ²¹⁰Po. Hence, doses created with ^239,240Pu to the Black Sea hydrobionts were in n ⋅ 10⁶–10⁷ times less than the dose level offered by International Atomic Energy Agency (IAEA), at which there are no negative consequences in populations of aquatic organisms.