210Po concentration in Perna perna mussels: looking for radiation effects

Polonium (210Po) and lead (210Pb) in marine organisms and their transfer in marine food chains

“…Investigation on 210 Po and 210 Pb levels in other marine organisms, in the diet of crustaceans and fishes, and in the processes of bioaccumulation of these radionuclides from water and from food progressed (Bustamante et al, 2002;Fowler, 1993, 1994;Cherry et al, 1989;Heyraud and Cherry, 1979;Heyraud et al, 1988Heyraud et al, , 1994Stewart et al, 2005Stewart et al, , 2007Wildgust et al, 2000). The current data base on these radionuclides distinctly expanded into more species, taxonomic groups and environments (Carvalho, 1988(Carvalho, , 1995Carvalho and Oliveira, 2008;Carvalho et al, 2010a,b;Charmasson et al, 1998;Dahlgaard, 1996;Godoy et al, 2008;Jeffree et al, 1997;Ryan et al, 1999;Skwarzec and Bojanowsky, 1988). Currently known 210 Po and 210 Pb activity concentrations in marine biota spread over several orders of magnitude, in an apparent chaos of values strikingly not related to sea water depths, ecosystems or geographic locations.…”

210Po in mussels and shrimp from Ilha Grande Bay, Rio de Janeiro, Brazil

“…When compared with the mussel Perna perna from Guanabara Bay, also in Rio de Janeiro state, close to the city of Rio de Janeiro, mussels from Ilha Grande Bay present an activity concentration for 210 Po 2 to 10 times higher [12]. However this activity is between the activity found in the bivalve Mytella falcata from Mundaú Lagoon, situated on the northeast coast of Brazil, state of Alagoas, close to the city of Maceió [14], and the activity found in Perna perna mussels caught in Cabo Frio Island, approximately 100 km northeast of Rio de Janeiro city [15]. If compared with the results obtained for mollusc from the Northeast Atlantic [16], the activity concentrations of 210 Po are similar.…”

Radionuclides in south Indian seafoods: A special focus on major contributing species

“…It has been shown that in all oceanic ecological domains there are organisms with particularly high concentrations of 210 Po, and these organisms or some of their organs may receive high radiation doses from internally accumulated 210 Po [11,20,21]. Absorbed radiation doses have been estimated for fishes, and the internal dose rate for fishes were estimated to be in the range of 1.26 × 10 -5 to 0.12 Gy · h -1 (Fig.…”