Radioecology Monitoring System for Mountine Areas of the Tisza River Basin (Transcarpathia, Ukraine)

Abstract

Regularities of distribution, migration and accumulation of natural gamma-active nuclides 40K, series of uranium 238U (214Pb, 214Bi) and thorium 232Th (212Pb, 212Bi, 228Ac, 208Tl), as well as technogenic 137Cs in the bottom sediments of the Tisza region in Transcarpathia (Ukraine) have been established. It is shown that the content of these radionuclides in the bottom sediments is relatively stable along the entire length of the Tisza river and is proportional to the level of its siltation, which largely depends on the morphology of the river. It was found that the total specific activity of natural gamma-active radionuclides (excluding 40K) in bottom sediments ranges from 110…139.7 Bq/kg. Areas of accumulation of gamma-active nuclides in the bottom sediments of the studied river have been identified, and the probable causes of this phenomenon have been substantiated. The averaged data of the content of specific activity of radionuclides in the bottom sediments of the Tisza river were used for mapping and forecasting of migration processes, as well as for identification of the studied sections of the river taking into account the geochemical features of the region.

Radiation Mapping of the Borzhava River Areas, Tisza Basin: Peculiarities of Radionuclide Distribution and Organisational and Managerial Support of Mountainous Territories

“…The obtained data on the distribution of 137 Cs content in the sediments of the Borzhava River are consistent with the results for sediments of small rivers of Transcarpathia, where the concentration of this radionuclide varies from 1.5 to 7 Bq/kg [23]. Similar (about 2.1-8.9) are the data on the distribution of 137 Cs in the sediments of the Tisza River (the largest tributary of the Danube River) for the Transcarpathia region [18,24], which indicates a low concentration of 137 Cs in the study area.…”

“…In our case, we utilized the ArcGIS 10.2.1 computer program widely used by scientists globally to work with geodata and present it in a visual format. This process is instrumental in solving various scientific problems [16][17][18][19][20].…”

Symkanych О.І., Коkhan О.P., Glukh О.S., Krch K.L., Lytvyn О.V., Svatiuk N.І., Butsyak І.V. MONITORING OF RADIONUCLIDE MIGRATION IN THE BOTTOM SEDIMENTS OF THE TISA BILA RIVER' SOURCE

“…екологічної оцінки водних екосистем одним з об'єктів дослідження можуть бути донні відклади, які акумулюють (маючи велику сорбційну здатність) та транспортують (внаслідок водообміну і дренажу) частину радіонуклідів в основні русла рік у межах географічного району за течією річки [2]. Отже, результати хімічного та радіоекологічного моніторингу донних відкладів річок і водойм не лише свідчать про ступінь забруднення водних ресурсів, але й надають інформацію про екологічний стан значних прилеглих територій [3][4][5].…”

“…OF THE TISA BILA RIVER' SOURCE 1 Symkanych О.І., 1 Коkhan О.P., 1 Glukh О.S., 1 Krch K.L., 1 Lytvyn О.V., 2 Svatiuk N.І., 3 Butsyak І.V. 1 Uzhhorod National University», 88000, Uzhhorod, Pidgirna str., 46 2 Institute of Electron Physics of the National Academy of Sciences of Ukraine, 21, Universitetska Str., Uzhhorod, Ukraine, 88017 3 Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, Lviv, st.…”