Abstract
Investigations to determine the presence and distribution of some anthropogenic pre- and post-Chernobyl radionuclides and to evaluate their behaviour and transport within different environmental components were conducted between 1979 and 1990 in Northern and Middle Adriatic Sea. Although the Chernobyl accident introduced many radionuclides into this environment, most of them had very short half lives and only Ru-103, Ru-106, Ag-110m, Cs-134 and Cs-137 were fully investigated on a long term basis due to their long persistency and abundance. In particular, neutron activation products, such as Ag-110m and Cs-134, not present in the environment before the event, were fully detected for the first time in the ecosystem shortly after the contamination. The results highlight the distribution of the considered gamma emitting radioisotopes in samples of seawater, sediments, mixed plankton, icthyofauna and benthic macrofauna, and allow a complete mapping and assessment of the Adriatic radiocontamination after 10 years of intense and extended monitoring of the ecosystem.
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