Natural radionuclides in major aquifer systems of the Parana sedimentary basin, Brazil

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dc.contributor.authorBonotto, Daniel Marcos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:17:18Z
dc.date.available2014-05-20T14:17:18Z
dc.date.issued2011-10-01
dc.description.abstractThis paper describes the natural radioactivity of groundwater occurring in sedimentary (Bauru and Guarani) and fractured rock (Serra Geral) aquifer systems in the Parana sedimentary basin, South America that is extensively used for drinking purposes, among others. The measurements of gross alpha and gross beta radioactivity as well the activity concentration of the natural dissolved radionuclides (40)K, (238)U, (234)U, (226)Ra, (222)Rn, (210)Pb and (210)Pb were held in 80 tubular wells drilled in 21 municipalities located at São Paulo State and its border with Mato Grosso do Sul State in Brazil. Most of the gross alpha radioactivity data were below 1 mBq/L, whereas values exceeding the gross beta radioactivity detection limit of 30 mBq/L were found. The radioelement solubility in the studied systems varied according to the sequence radon > radium > other radionuclides and the higher porosity of sandstones relatively to basalts and diabases could justify the enhanced presence of dissolved radon in the porous aquifer. The implications of the data obtained in terms of standards established for defining the drinking water quality have also been discussed. The population-weighted average activity concentration for these radionuclides was compared to the guideline value of 0.1 mSv/yr for the total effective dose and discussed in terms of the choice of the dose conversion factors. (C) 2011 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Dept Petrol & Metalogenia, IGCE, UNESP, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Petrol & Metalogenia, IGCE, UNESP, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent1572-1584
dc.identifierhttp://dx.doi.org/10.1016/j.apradiso.2011.06.002
dc.identifier.citationApplied Radiation and Isotopes. Oxford: Pergamon-Elsevier B.V. Ltd, v. 69, n. 10, p. 1572-1584, 2011.
dc.identifier.doi10.1016/j.apradiso.2011.06.002
dc.identifier.issn0969-8043
dc.identifier.lattes7430102726026121
dc.identifier.urihttp://hdl.handle.net/11449/25186
dc.identifier.wosWOS:000294882600038
dc.language.isoeng
dc.publisherPergamon-Elsevier B.V. Ltd
dc.relation.ispartofApplied Radiation and Isotopes
dc.relation.ispartofjcr1.123
dc.relation.ispartofsjr0,528
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectNatural radionuclidesen
dc.subjectParana basinen
dc.subjectGroundwateren
dc.subjectRadiation doseen
dc.titleNatural radionuclides in major aquifer systems of the Parana sedimentary basin, Brazilen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderPergamon-Elsevier B.V. Ltd
unesp.author.lattes7430102726026121
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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Artigos - Petrologia e Metalogenia - IGCE