Document Detail


Intake of uranium and radium-226 due to food crops consumption in the phosphate region of Pernambuco--Brazil.
MedLine Citation:
PMID:  15885383     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The phosphate region located in the Northeast of Brazil covers an area of approximately 150 km long with an average width of 4 km, along the coast of the states of Pernambuco and Paraíba. The inhabitants of this area are exposed to natural radioactivity levels higher than the background values recorded in the literature, mainly due to the presence of uranium and its decay products in the phosphatic sediments. The main aim of this study was to determine the activity concentration of uranium and (226)Ra in foodstuffs cultivated in this area, where the phosphate mineral has been extracted. The activity concentrations found for uranium and (226)Ra in the foodstuffs analyzed varied from 13 to 186 mBq kg(-1) (wet weight), with a mean value of 46 mBq kg(-1) and from 43 to 2209 mBq kg(-1) (wet weight), with a mean value of 358 mBq kg(-1), respectively. The annual intake of these radionuclides, for rural residents, was 7.45 Bq for uranium and 69.3 Bq for (226)Ra.
Authors:
Romilton dos Santos Amaral; Wagner Eustaquio de Vasconcelos; Edvane Borges; Sueldo Vita Silveira; Barbara Paci Mazzilli
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-04-07
Journal Detail:
Title:  Journal of environmental radioactivity     Volume:  82     ISSN:  0265-931X     ISO Abbreviation:  J Environ Radioact     Publication Date:  2005  
Date Detail:
Created Date:  2005-05-11     Completed Date:  2005-10-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8508119     Medline TA:  J Environ Radioact     Country:  England    
Other Details:
Languages:  eng     Pagination:  383-93     Citation Subset:  IM    
Affiliation:
Grupo de Estudos em Radioproteção e Radioecologia-GERAR, Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Av. Prof. Luiz Freire, 1000, CEP 50740-540 Recife-PE, Brazil. romilton@ufpe.br
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MeSH Terms
Descriptor/Qualifier:
Angiosperms / chemistry
Brazil
Crops, Agricultural / chemistry*
Food Contamination, Radioactive*
Humans
Phosphates
Radiation Dosage
Radium / analysis*
Soil Pollutants, Radioactive / analysis*
Uranium / analysis*
Chemical
Reg. No./Substance:
0/Phosphates; 0/Soil Pollutants, Radioactive; 7440-14-4/Radium; 7440-61-1/Uranium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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