Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil

Detalhes bibliográficos
Autor(a) principal: Bonotto, D. M.
Data de Publicação: 1991
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.2166/wst.1991.0349
http://hdl.handle.net/11449/219150
Resumo: Groundwater and surface water samples were collected at Morro do Ferro, a thorium and rare earth deposit located on the Pocos de Caldas Plateau, Minas Gerais State, Brazil, to evaluate if the mechanisms related to the migration of 238U and 234U isotopes can generate concentrations greater than the gross-alpha activity contaminant limit. The 238U content range was 0.003-0.24pCi/l and the 234U content range was 0.004-0.25pCi/l, showing that the studied hydrologic environment doesn't indicate pollution by radioactivity due to these nuclides. However, 226Ra and 228Ra isotopes can be considered as radioactive pollutants in groundwaters but not in surface waters of the Morro do Ferro.
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spelling Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, BrazilGroundwater and surface water samples were collected at Morro do Ferro, a thorium and rare earth deposit located on the Pocos de Caldas Plateau, Minas Gerais State, Brazil, to evaluate if the mechanisms related to the migration of 238U and 234U isotopes can generate concentrations greater than the gross-alpha activity contaminant limit. The 238U content range was 0.003-0.24pCi/l and the 234U content range was 0.004-0.25pCi/l, showing that the studied hydrologic environment doesn't indicate pollution by radioactivity due to these nuclides. However, 226Ra and 228Ra isotopes can be considered as radioactive pollutants in groundwaters but not in surface waters of the Morro do Ferro.Groundwater and surface water samples were collected at Morro do Ferro, a thorium and rare earth deposit located on the Pocos de Caldas Plateau, Minas Gerais State, Brazil, to evaluate if the mechanisms related to the migration of 238U and 234U isotopes can generate concentrations greater than the gross alpha activity contaminant limit. The 234U content range was 0.004-0.25 pCi/1, and the 234U content range was 0.004-0.25 pCi/l, showing that the studied hydrologic environment doesn't indicate pollution by radioactivity due to these nuclides. However, 226Ra and 220Ra isotopes can be considered as radioactive pollutants in groundwaters but not in surface waters of the Morro do Ferro.Instituto de Geociencias e Ciencias Exatas, UNESP, 13500 Rio Claro (Sp)Universidade Estadual Paulista (UNESP)Bonotto, D. M.2022-04-28T18:54:01Z2022-04-28T18:54:01Z1991-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject171-179http://dx.doi.org/10.2166/wst.1991.0349Water Science and Technology, v. 24, n. 11, p. 171-179, 1991.0273-1223http://hdl.handle.net/11449/21915010.2166/wst.1991.03492-s2.0-0026359789Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengWater Science and Technologyinfo:eu-repo/semantics/openAccess2022-04-28T18:54:01Zoai:repositorio.unesp.br:11449/219150Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:36:09.826778Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
title Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
spellingShingle Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
Bonotto, D. M.
title_short Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
title_full Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
title_fullStr Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
title_full_unstemmed Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
title_sort Uranium isotopes as radioactive pollutants in groundwaters of the Morro do Ferro thorium deposit, Brazil
author Bonotto, D. M.
author_facet Bonotto, D. M.
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Bonotto, D. M.
description Groundwater and surface water samples were collected at Morro do Ferro, a thorium and rare earth deposit located on the Pocos de Caldas Plateau, Minas Gerais State, Brazil, to evaluate if the mechanisms related to the migration of 238U and 234U isotopes can generate concentrations greater than the gross-alpha activity contaminant limit. The 238U content range was 0.003-0.24pCi/l and the 234U content range was 0.004-0.25pCi/l, showing that the studied hydrologic environment doesn't indicate pollution by radioactivity due to these nuclides. However, 226Ra and 228Ra isotopes can be considered as radioactive pollutants in groundwaters but not in surface waters of the Morro do Ferro.
publishDate 1991
dc.date.none.fl_str_mv 1991-01-01
2022-04-28T18:54:01Z
2022-04-28T18:54:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.2166/wst.1991.0349
Water Science and Technology, v. 24, n. 11, p. 171-179, 1991.
0273-1223
http://hdl.handle.net/11449/219150
10.2166/wst.1991.0349
2-s2.0-0026359789
url http://dx.doi.org/10.2166/wst.1991.0349
http://hdl.handle.net/11449/219150
identifier_str_mv Water Science and Technology, v. 24, n. 11, p. 171-179, 1991.
0273-1223
10.2166/wst.1991.0349
2-s2.0-0026359789
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Water Science and Technology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 171-179
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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