A method for evaluating Ra-228 in environmental matrices and its use at Pocos de Caldas plateau, Brazil
Nenhuma Miniatura disponível
Data
2002-10-01
Autores
Mancini, L. H.
Bonotto, Daniel Marcos [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
This work describes a methodology developed for performing the extraction, detection and quantification of Ra-228 in waters, suspended solids and sediments. The technique proved to be useful for analyzing samples from the hydrological environment of Morro do Ferro, Pocos de Caldas plateau, Brazil. The 228Ra activity in underground waters of 5 boreholes drilled in the area varied from 0.02 up to 14.5 Bq/l, whereas for the surficial waters the variation was from 0.04 to 0.51 Bq/l; for the suspended solids, the values ranged from 1.5 up to 419 Bq/g, whereas it was possible to find a value of 2.04 Bq/g for the sediments. These results show the applicability of the method for characterizing different matrices of environmental interest. (C) 2002 Elsevier B.V. Ltd. All rights reserved.
Descrição
Palavras-chave
Ra-228, waters, sediments, suspended solids
Como citar
Applied Radiation and Isotopes. Oxford: Pergamon-Elsevier B.V., v. 57, n. 4, p. 591-600, 2002.