Search academic texts

Information × Registration Number 0226U002225, (0121U108006) , R & D reports Title Modification of dose-dependent effects of long-term exposure to ionizing radiation in aquatic organisms and migration capacity of radionuclides under conditions of changes in hydrophysical, hydrochemical and hydrobiological parameters of the aquatic environment popup.stage_title Модифікація дозозалежних ефектів тривалого впливу іонізуючого випромінювання у гідробіонтів та міграційна здатність радіонуклідів в умовах змін гідрофізичних, гідрохімічних та гідробіологічних параметрів водного середовища Head Hudkov Dmytro I., д.б.н. Registration Date 11-02-2026 Organization Institute of Hydrobiology of the National Academy of Sciences of Ukraine popup.description1 Study of migratory behavior and redistribution of radionuclides, features of absorbed dose of ionizing radiation formation and modification of cytogenetic and somatic effects in aquatic organisms in waterbodies that have undergone radical changes in hydrological, hydrophysical, hydrochemical and hydrobiological parameters of the aquatic environment. popup.description2 The object of the study is the behavior and effect on aquatic organisms of radionuclides in natural water bodies in a gradient of prolonged radiation exposure. The purpose of the work is to investigate the migration behavior and redistribution of radionuclides, the features of the formation of the radiation dose rate and the modification of cytogenetic and somatic effects in aquatic organisms of water bodies that have undergone radical changes in the hydrological, hydrophysical, hydrochemical and hydrobiological parameters of the aquatic environment. Research methods are hydrobiological and radioecological sampling methods, spectrometric and radiochemical analysis of the specific activity of radionuclides; dosimetric analysis of the absorbed dose rate of ionizing radiation; cytogenetic, hematological and reproductive methods for assessing radiobiological effects. It was established that the change in the hydrological regime of the cooling reservoir of the Chernobyl NPP and Lake. Azbuchyn led to a disruption of the dynamic equilibrium of the processes of transition of mobile forms of radionuclides (primarily 90Sr) from bottom sediments to the water column and their removal due to hydraulic connection and filtration through the dams to the Pripyat River. The ongoing process of transition of radionuclides from bottom sediments under conditions of changing hydrological regime, on the one hand, and on the other hand, the entry of mobile biologically available forms of 90Sr into water bodies from soils that ended up in drained areas, led to an increase in the volume activity of the radionuclide in the water of the cooling reservoir and Lake Azbuchyn by 3 and 14 times, respectively, as well as an increase in the level of its accumulation by aquatic biota and, accordingly, to an increase in the absorbed radiation dose rate. Product Description popup.authors Volkova Elena Nikolaevna Pomortseva Nataliia A. Volodymyr V. Beliaiev Yurchuk Liudmyla P. Shevtsova Nataliia L. Pryshliak Serhii P. Kahlian Oleksandr Ye. Gudkov Dmitry Ihorovych Menkovska Mariia O. Iryna V. Marushchak popup.nrat_date 2026-02-11 Close