Volume 37, Number C1, February 2002ECORAD 2001: The Radioecology - Ecotoxicology of Continental and Estuatine Environments
|C1-541 - C1-546
|14 October 2009
Cultural inputs of 226Ra and 226Ra in tropical agricultural environments
Instituto de Radioprotecao e Dosimetra, Av. Salvador Allende s/n 37750, 22780-160 Rio de Janeiro, Brazil
In this work, soil to plant transfer factor of 226Ra and 228Ra obtained in areas of traditional agricultural practices varied as a function of the considered cultivated species, but little variation was observed as a function of the soil type. Beans and soybeans presented a more important absorption than cereals (com, rice and wheat). Values of transfer factor of the legumes (beans and soybeans) were about an order of magnitude greater than the average obtained in areas of high natural radioactivity, while the results for the cereals did not presented such clear differences. Cultural inputs of 226Ra and 228Ra are occurring in agricultural areas, but few species can demonstrate it. Soil to plant transfer factor values for 226Ra and 228Ra, obtained in agricultural areas seem more applicable in models of risk evaluation.
© EDP Sciences, 2002
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