Use este identificador para citar ou linkar para este item:
https://repositorio.inpa.gov.br/handle/1/17492
Registro completo de metadados
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Silva, Márcio Luiz da | - |
dc.contributor.author | Bonotto, Daniel Marcos | - |
dc.date.accessioned | 2020-06-15T21:48:05Z | - |
dc.date.available | 2020-06-15T21:48:05Z | - |
dc.date.issued | 2015 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/17492 | - |
dc.description.abstract | This paper reports the behavior of the dissolved U-isotopes 238U and 234U in groundwater providing from 15 cities in Amazonas State, Brazil. The isotope dilution technique accompanied by alpha spectrometry were utilized for acquiring the U content and 234U/238U activity ratio (AR) data, 0.01-1.4μgL-1 and 1.0-3.5, respectively. These results suggest that the water is circulating in a reducing environment and leaching strata containing minerals with low uranium concentration. A tendency to increasing ARs values following the groundwater flow direction is identified in Manaus city. The AR also increases according to the SW-NE directions: Uarini→Tefé; Manacapuru→Manaus; Presidente Figueiredo→São Sebastião do Uatumã; and Boa Vista do Ramos→Parintins. Such trends are possibly related to several factors, among them the increasing acid character of the waters. The waters analyzed are used for human consumption and the highest dissolved U content is much lower than the maximum established by the World Health Organization. Therefore, in view of this radiological parameter they can be used for drinking purposes. © 2014 Elsevier Ltd. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 97, Pags. 24-33 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Dissolution | en |
dc.subject | Groundwater Flow | en |
dc.subject | Isotopes | en |
dc.subject | Nuclear Fuels | en |
dc.subject | Uranium | en |
dc.subject | Activity Ratios | en |
dc.subject | Amazon Area | en |
dc.subject | Groundwater Flow Directions | en |
dc.subject | Isotope Dilution Technique | en |
dc.subject | Reducing Environment | en |
dc.subject | Tubewells | en |
dc.subject | Uranium Concentration | en |
dc.subject | World Health Organization | en |
dc.subject | Groundwater | en |
dc.subject | Groundwater | en |
dc.subject | Uranium 234 | en |
dc.subject | Uranium 238 | en |
dc.subject | Acidity | en |
dc.subject | Alpha Spectrometry | en |
dc.subject | Concentration (parameters) | en |
dc.subject | Fluid Intake | en |
dc.subject | Isotope Dilution Assay | en |
dc.subject | Leaching | en |
dc.subject | Radioactive Pollution | en |
dc.subject | Radioactivity | en |
dc.subject | Spectrometry | en |
dc.subject | Trend Study | en |
dc.subject | Water Analysis | en |
dc.subject | Water Flow | en |
dc.subject | Water Pollution | en |
dc.subject | Water Quality | en |
dc.title | Uranium isotopes in groundwater occurring at Amazonas State, Brazil | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1016/j.apradiso.2014.12.012 | - |
dc.publisher.journal | Applied Radiation and Isotopes | pt_BR |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.