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- Title
Migration and Distribution Fluxes of Plutonium Radioisotopes in Coastal Semiclosed Marine Areas.
- Authors
Paraskiv, A. A.; Tereshchenko, N. N.; Proskurnin, V. Yu.; Chuzhikova-Proskurnina, O. D.; Vakhrushev, M. O.
- Abstract
The article presents the results of a quantitative determination of the migration and distribution fluxes of plutonium radioisotopes 239 + 240Pu in coastal semiclosed marine ecosystems from a case study example of Sevastopol Bay (Black Sea) to assess the self-purification of water masses from 239 + 240Pu. The assessment was based on a study of the current (2018–2021) levels of the activity concentration of 239 + 240Pu in water, bottom sediments, perennial brown macroalgae, and benthic fish. It has been found that the main 239 + 240Pu removal flux (more than 93% of the total flux), which determines the self-purification of water masses with respect to 239 + 240Pu in coastal marine areas is the sediment flux of suspended particle matter, which causes redistribution of 239 + 240Pu into bottom sediments. 239 + 240Pu migration to neighboring water areas due to hydrological processes is insignificant, as well as the decrease in 239 + 240Pu in the ecosystem due to radioactive decay. In total, these processes accounted for less than 1% of the total flux. The interaction of 239 + 240Pu with macrobiota accounted for almost 6%, of which more than 5% was provided by macrophytes.
- Subjects
SEVASTOPOL' (Ukraine); RADIOISOTOPES; PLUTONIUM; WATER masses; MARINE ecology; RADIOACTIVE decay
- Publication
Oceanology (00014370), 2024, Vol 63, Issue 1, pS155
- ISSN
0001-4370
- Publication type
Article
- DOI
10.1134/S0001437023070135