Po-210 activity concentrations in wild and farmed fish from the Aegean Sea and Sea of Marmara and dose assessment to consumers.

Polonium (Po) is the major contributor (with approximately 90%) to the radiation dose from radionuclides contained in the human diet, and it is mostly associated with seafood. This study presents Po activity concentrations in the tissues of 16 fish species from the Aegean Sea and Sea of Marmara. Among all species investigated, the highest Po activity concentration was 4450 ± 33 Bq kg dry weight (dw) in the digestive tract of anchovy (Engraulis encrasicolus), and the lowest Po activity concentration was 1.