dc.contributorUniversidade Federal do Rio Grande do Sul (UFRGS)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:28:35Z
dc.date.accessioned2022-10-05T18:44:50Z
dc.date.available2014-05-27T11:28:35Z
dc.date.available2022-10-05T18:44:50Z
dc.date.created2014-05-27T11:28:35Z
dc.date.issued2013-03-01
dc.identifierIsotopes in Environmental and Health Studies, v. 49, n. 1, p. 122-131, 2013.
dc.identifier1025-6016
dc.identifier1477-2639
dc.identifierhttp://hdl.handle.net/11449/74701
dc.identifier10.1080/10256016.2012.709243
dc.identifierWOS:000315681000010
dc.identifier2-s2.0-84874416188
dc.identifier7430102726026121
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3923652
dc.description.abstractThe equivalent uranium (eU) activity concentration was analysed in selected granite samples at several sites in Porto Alegre, Southern Brazil, to obtain information on the radon (222Rn) generation by the aquifer rock matrices. Radon analyses of ground water and soil samples were also performed. Several samples exhibited a dissolved 222Rn activity concentration exceeding the World Health Organization maximum limit of 100 Bq l-1. The dissolved radon content in ground waters from the Fractured Precambrian Aquifer System exhibited a direct significant correlation with the eU in the rock matrices, which is a typical result of water-rock interactions. Variation in the soil's porosity was confirmed as an important factor for 222Rn release, as expected, due to its gaseous nature. Thus, although the calcic-alkaline to alkaline Precambrian granitoid rocks of the study area are important reservoirs for underground resources, they can release high amounts of radon gas into the liquid phase. © 2013 Copyright Taylor and Francis Group, LLC.
dc.languageeng
dc.relationIsotopes in Environmental and Health Studies
dc.relation1.527
dc.relation0,451
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectgranitoid rocks
dc.subjectground water
dc.subjectnatural radioactivity
dc.subjectPorto Alegre (RS)
dc.subjectradioactive nuclides
dc.subjectradon-222
dc.subjectsoils
dc.subjectradon
dc.subjectsilicon dioxide
dc.subjectaquifer
dc.subjectemission
dc.subjectgranitoid
dc.subjectgroundwater pollution
dc.subjectporosity
dc.subjectPrecambrian
dc.subjectradioactivity
dc.subjectradon isotope
dc.subjectsoil pollution
dc.subjecturanium
dc.subjectwater-rock interaction
dc.subjectBrazil
dc.subjectchemistry
dc.subjectgranite
dc.subjectradiation monitoring
dc.subjectsoil
dc.subjectsoil pollutant
dc.subjectwater pollutant
dc.subjectGroundwater
dc.subjectRadiation Monitoring
dc.subjectRadon
dc.subjectSilicon Dioxide
dc.subjectSoil
dc.subjectSoil Pollutants, Radioactive
dc.subjectWater Pollutants, Radioactive
dc.subjectPorto Alegre
dc.subjectRio Grande do Sul
dc.titleRadon emissions related to the granitic Precambrian shield in southern Brazil
dc.typeArtigo


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