Estimation of plutonium 241Pu budget in the Gulf of Gdańsk and the Gdańsk Basin (the southern Baltic Sea)
2022
Strumińska-Parulska, Dagmara | Olszewski, Grzegorz
Presented have been the results of inventory estimation of anthropogenic beta-emitting ²⁴¹Pu, in different components in the southern Baltic Sea ecosystem. The total ²⁴¹Pu activity present in the Gulf of Gdańsk and the Gdańsk Basin for 2021 was estimated at 1.99 TBq and 7.82 TBq, respectively, of which 1.59 TBq and 6.38 TBq in the sediments. The Vistula and the Neman River and the atmospheric fallout were distinguished as the primary sources of plutonium in these basins. In seawater of the Gulf of Gdańsk, there was about 0.40 TBq ²⁴¹Pu (20.1% of total activity) and 1.44 TBq ²⁴¹Pu (18.4% of total activity) in the Gdańsk Basin. The ²⁴¹Pu accumulated in living organisms in 2021 was 1.13 GBq in the Gulf of Gdańsk and 3.96 GBq in the Gdańsk Basin. In the Gulf of Gdańsk biota, 55.7% was accumulated in zoobenthos, while in the Gdańsk Basin, 48.3% was in zoobenthos.
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