Document Detail


Naturally occurring radionuclides in food and drinking water from a thorium-rich area.
MedLine Citation:
PMID:  22782172     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This paper focuses on a survey of uranium and thorium decay chain radionuclides in food and drinking water from the thorium-rich (monazite-bearing) region of Buena, which is located in the state of Rio de Janeiro, Brazil. The radionuclide concentration values in the food and drinking water from Buena reached values higher than 100-fold the international reference values. The daily intake of radionuclides by the local population is similar to that of another high background radiation area in Brazil, but the intake is higher than that of residents from a normal background radiation area. Approximately 58 % of the food consumed by Buena inhabitants is produced locally. Based on that figure, locally produced food and the dilution of total radionuclides in the diet of residents caused by food importation are both highly relevant to a population's intake of radionuclides. The concentration values for (210)Pb and the radium isotopes in drinking water from Buena are among the highest values to be reported in the literature. (228)Ra is the most important radionuclide ingested with both food and water among the inhabitants of Buena.
Authors:
Dejanira da Costa Lauria; Elaine R R Rochedo; Maria Luisa D P Godoy; Eliane E Santos; Sandra S Hacon
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-11
Journal Detail:
Title:  Radiation and environmental biophysics     Volume:  -     ISSN:  1432-2099     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0415677     Medline TA:  Radiat Environ Biophys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Instituto de Radioproteção e Dosimetria, Brazilian Nuclear Energy Commission, Av. Salvador Allende, s/n, Rio de Janeiro, CEP 22780-160, Brazil, dejanira@ird.gov.br.
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