28 June 2021 to 2 July 2021
Europe/Vienna timezone

Radionuclides Cs137 and Sr90 in mussel population from Rio de Janeiro, Brazil.

P2.4-075
30 Jun 2021, 09:00
3h
Online

Online

e-Poster T2.4 - Atmospheric and Subsurface Radionuclide Background and Dispersion T2.4 e-poster session

Speaker

Mr Flavio Da Costa Fernandes (Admiral Paulo Moreira Marine Research Institute, Rio de Janeiro, Brazil)

Description

The most common mussel species in Rio de Janeiro State is Perna perna. It is an edible Mylilidae that has been cultivated in many places at Brazilian coast from Espirito Santo to Rio Grande do Sul States. Ten kilograms of flesh of mussels with a size of 5 to 8 cm were collected annually in the town of Arraial do Cabo, Rio de Janeiro State (23o S and 42o W) from 2002 to 2009. These organisms are distributed on rocky shores from the intertidal zone to 5 meters deep. The results of the analyses are in a database at the Admiral Paulo Moreira Marine Research Institute. The concentration of Cs 137 in the mussels was very low varying from 0,003 to 0,21 Bq.kg-1. The concentration of Sr 90 was also very low, varying from 0,006 to 0,03 Bq.kg-1. The results show that the radionuclides found in mussel of Arraial do Cabo are in very low concentrations and do not cause any harm to the health of the local human population. The only source known of these radionuclides is from the nuclear atmospheric tests made in the past.

Promotional text

This is the first study on artificial radionuclides in mussels of Arraial do Cabo at Rio de Janeiro State, Brazil. The concentrations are very low and do not represent any harm for the local human population.

Primary author

Mr Flavio Da Costa Fernandes (Admiral Paulo Moreira Marine Research Institute, Rio de Janeiro, Brazil)

Presentation materials

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