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Gross alpha and beta activities in surface, underground and drinking waters of a high natural radioactivity region of central south Bahia state, Brazil

Published online by Cambridge University Press:  09 January 2012

J. Barescut ,
D. Lariviere ,
T. Stocki ,
L. Sousa Silva  and
B.R.S. Pecequilo
L. Sousa Silva
Affiliation:
Environmental Radiometric Division, Instituto de Pesquisas Energéticas e Nucleares, Av. Prof. Lineu Prestes, 2242, Cidade Universitária, 05508-000, São Paulo, SP, Brazil State University of Bahia, UNEB, Campus Caetité, BA, Brazil
B.R.S. Pecequilo*
Affiliation:
Environmental Radiometric Division, Instituto de Pesquisas Energéticas e Nucleares, Av. Prof. Lineu Prestes, 2242, Cidade Universitária, 05508-000, São Paulo, SP, Brazil
*
e-mail: [email protected]
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Abstract

The levels of gross alpha and beta natural radioactivities in surface, underground and drinking waters consumed by the urban and rural population living in Lagoa Real Uranium Province of central south Bahia state, Brazil were determined in several samples collected from urban public supply of drinking water and, in the rural area, from dug and drilled wells and also from small dams and reservoirs supplied with rainfall. After pre-concentration, the samples were evaporated under an infrared lamp on an inox planchet and subsequently counted on a thin end-window low-background proportional counter, namely Berthold LB 770. Preliminary results show natural radiation levels varying from 0.02 ± 0.001 Bq/L to 0.80 ± 0.04 Bq/L for gross alpha activity and from 0.010 ± 0.006 to 3.0 ± 0.2 Bq/L for gross beta activity. Some values exceed the 2004 WHO recommendation levels that the screening levels for drinking water below which no further action is required are 0,5 Bq/litre for gross alpha activity and 1 Bq/litre for gross beta activity. However, as we are dealing with natural radiation in a well-known high background radiation area, more studies are needed.

Type
Research Article
Information
Radioprotection , Volume 46 , Issue 6: ICRER 2011 – International Conference on Radioecology & Environmental Radioactivity: Environment & Nuclear Renaissance , 2011 , pp. S63 - S67
Copyright
© Owned by the authors, published by EDP Sciences, 2011

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References

UNSCEAR – United Scientific Committee on the Effects of Atomic Radiation, The 2000 Report to the General Assembly with scientific Annexes. New York: United Nations, 2000.
M. Bolca, M.M. Saç, B. Çokuysal, T. Karalı, E. Ekdal. Radioactivity in soils and various foodstuffs from the Gediz River Basin of Turkey, Radiation Measurements, volume 42, issue 2, February 2007, Pages 263-270.
EISENBUD, M. Environmental Radioactivity. 2nd ed. Academic Press, Orlando, 1987.
D. M. Bonoto, Radioatividade nas águas : da Inglaterra ao Guarani, São Paulo: Editora UNESP, 2004.
W. Teixeira, M. Toledo C. M., T. R. Fairchild, F. Taioli. Decifrando a Terra. São Paulo: Oficina de Textos., 2000.
V. Jobbágy, U. Watjen, J. Meresova. Current status of gross alpha/beta activity analysis in water samples: a short overview of methods, J. Radioanal Nucl Chem, 2010, 286:393-399.
WHO – Word Health Organization. Guidelines for Drinking-water Quality Third edition incorporating the first and second addenda, Volume 1 Recommendations, 2008.
AMBIENTE BRASIL Energia/Nuclear. http://ambientes.ambientebrasil.com.br/energia/nuclear, acesso em 07/03/2011.
INB- Indústrias Nucleares do Brasil. http://www.inb.gov.br/inb/ acesso 07/03/2011.
S. N. P. Guimarães, V. M. Hamza. Avanços na caracterização das estruturas Geológicas em subsuperfície da província uranífera Lagoa Real (BA) a partir de dados Aerogeofísicos,UNESP, Geociência, v. 28, n.3. p. 273-286, 2009.
IBGE – Instituto Brasileiro de Geografia e Estatística, http://www.ibge.gov.br/censo2010/, acesso em 06/03/2011.
SEI, 2011. Informações Geoambientais da Superintendência de Estudos Econômicos e Sociais da Bahia. Disponível em: ¡http://www.sei.ba.gov.br/geoambientais/ . Acesso em: 06/03/2011.
INB – Industrias Nucleares do Brasil. EIA/RIMA Complexo Uranífero Minero Industrial de Lagoa Real. Caracterização de Empreendimento Tomo III- Anexos, Parte IIIa, 1997.