Radioactivity concentrations in mussel (Mytilus galloprovincialis)of Turkish Sea coast and contribution of ~(210)Po to the radiation dose

摘要

Radionuclides levels were determined in indigenous and transplanted mussels (Mytilus galloprovincialis) collected from Turkish marine environment. Radioactivity concentrations of ~(137)Cs, ~(40)K, ~(225)Ra,~(228)Ra,~(210)Po and ~(210)Pb were determined in the soft tissues of the mussel samples collected in Bosphorus Strait, Coasts of Black Sea, Marmara Sea and Aegean Sea. Mussel transplantation was carried out by using mussel cages in Levantine Sea coast since M. galloprovincialis did not naturally adapt along the coast. The average activity concentrations of ~(137)Cs, ~(40)K, ~(226)Ra, ~(228)Ra, ~(210)Po and ~(210)Pb in the coastline of Turkey were found to be 0.7 ± 0.1,469 ± 24,0.9 ± 0.1,1.0 ± 0.1,122 ± 4 and 10.9 ± 0.9 Bq kg~(-1) in dry weight (dw), respectively. The average of ~(210)Po/~(210)Pb ratio was found to be ～14. Total annual effective ~(210)Po dose was calculated to be in the range of 0.25-3.30 μSv due to mussel consumption. Radioactivity and dose levels were compared with those of similar studies carried out in Mediterranean countries.