Volume 44, Number 5, 2009ECORAD 2008 - Radioecology and Environmental Radioactivity
|Page(s)||453 - 456|
|Published online||06 June 2009|
210Po in shellfish Mytella falcata from a tropical estuary
Dept. of Chemistry, Pontifícia Universidade Católica, R. Marquês de S. Vicente 225, CEP 22453-900, Rio de Janeiro, Brazil
2 IRD, Comissão Nacional de Energia Nuclear, Barra da Tijuca, Rio de Janeiro, Brazil
3 Universidade Federal Fluminense, Niterói, Brazil
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.
© EDP Sciences, 2009
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