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210Po in shellfish Mytella falcata from a tropical estuary

Published online by Cambridge University Press:  06 June 2009

J. Barescut ,
I. Moreira ,
J. M. Godoy ,
Z. Carvalho ,
R. Rodrigues  and
B. Knoppers
I. Moreira
Affiliation:
Dept. of Chemistry, Pontifícia Universidade Católica, R. Marquês de S. Vicente 225, CEP 22453-900, Rio de Janeiro, Brazil
J. M. Godoy
Affiliation:
Dept. of Chemistry, Pontifícia Universidade Católica, R. Marquês de S. Vicente 225, CEP 22453-900, Rio de Janeiro, Brazil IRD, Comissão Nacional de Energia Nuclear, Barra da Tijuca, Rio de Janeiro, Brazil
Z. Carvalho
Affiliation:
IRD, Comissão Nacional de Energia Nuclear, Barra da Tijuca, Rio de Janeiro, Brazil
R. Rodrigues
Affiliation:
Dept. of Chemistry, Pontifícia Universidade Católica, R. Marquês de S. Vicente 225, CEP 22453-900, Rio de Janeiro, Brazil
B. Knoppers
Affiliation:
Universidade Federal Fluminense, Niterói, Brazil
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Abstract

Edible parts of the shellfish Mytella falcata collected in Mundaú Lagoon, a tropical estuary in the northeast coast of Brazil, were analyzed for 210Po contents. This lagoon serves as an estuary to the Mundaú River and a phosphate fertilizers factory is installed in its right margin. The bivalves were manually collected during the first two weeks of March 2007 and February 2008. The method for 210Po determination consisted of spontaneous deposition on copper disks followed by alpha counting. A decrease of the activity concentration of 210Po with soft tissue weighs was achieved, presenting a significant linear relationship (p < 0.05). The average value found for the activity concentration of 210Po in Mytella falcata was 88.4 Bq ⋅ kg-1 wet weight.

Type
Research Article
Information
Radioprotection , Volume 44 , Issue 5: ECORAD 2008 - Radioecology and Environmental Radioactivity , 2009 , pp. 453 - 456
Copyright
© EDP Sciences, 2009

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