Fishes, Vol. 10, Pages 330: Content of Short-Lived Radionuclides (95Zr, 95Nb, 103Ru, and 106Ru) in Fish

Fishes doi: 10.3390/fishes10070330

Authors:
Nataliia E. Zarubina
Vladislav Semak
Liliia P. Ponomarenko

This review addresses the intake, distribution, and bioaccumulation of the short-lived radionuclides 95Zr, 95Nb, 103Ru, and 106Ru in aquatic ecosystems before and after the 1986 accident at the Chornobyl Nuclear Power Plant. Particular attention is given to a detailed analysis of these processes in fish belonging to different ecological groups, as well as in their various organs and tissues. Observational data indicate that 95Zr and 95Nb predominantly accumulate in external organs, with comparatively lower concentrations observed in internal organs. In contrast, 103Ru and 106Ru exhibit higher bioavailability and a marked tendency to accumulate in internal tissues. A notable feature of 106Ru is its gradual increase in muscle tissue over time following the accident. These findings are critical for advancing our understanding and assessment of the ecological status of contaminated aquatic environments, for predicting the long-term impacts of accidental radionuclide release, and for informing strategies related to environmental monitoring and the safe exploitation of aquatic biological resources.

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Nataliia E. Zarubina www.mdpi.com