Please use this identifier to cite or link to this item: http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/1251
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dc.contributor.authorCarvalho Filho, Carlos Alberto-
dc.contributor.authorMoreira, Rubens Martins-
dc.contributor.authorBranco, Otavio E. A.-
dc.contributor.authorDutra, Pedro Henrique-
dc.contributor.authorSantos, Elizângela Auagusta dos-
dc.contributor.authorMoura, Igor F. S.-
dc.contributor.authorFleming, Peter Marshall-
dc.contributor.authorPalmieri, Helena Eugênia Leonhardt-
dc.date.accessioned2018-01-19T17:06:28Z-
dc.date.available2018-01-19T17:06:28Z-
dc.date.issued2017-
dc.identifier.citationCARVALHO FILHO, Carlos Alberto, et al. Combined hydrochemical, isotopic, and multivariate statistics techniques to assess the effects of discharges from a uranium mine on water quality in neighboring streams. Environmental Earth Sciences, v.76, n.24, p. 830-833, 2017.pt_BR
dc.identifier.issn866-6280pt_BR
dc.identifier.urihttp://www.repositorio.cdtn.br:8080/jspui/handle/123456789/1251-
dc.description.abstractThe Caldas Uranium Mine (CUM), located on the Poços de Caldas Plateau in the southeastern region of Brazil, is presently undergoing a decommissioning process. The aim of the present investigation is to identify and characterize the efects of acid mine drainage (AMD) originating from the CUM on surface water quality. To achieve these aims, sampling stations were located at two AMD sources: the retention pond at the foot of waste rock pile#4 (WRP#4) and the settling pond that receives efuents from the tailings dam (TD). Ten additional sampling stations were located along watercourses in the vicinity, both downstream and upstream of the mine. Sampling was performed during the rainy and dry seasons in 2010 and 2011. The water analysis detected signifcant changes in pH, electrical conductivity, F−, Cd, U, Zn, Al, Mn, As, Ca, SO4 2−, Pb, 238U, 226Ra, 210Pb, 232Th, 228Ra, and Mo in waters downstream of both pond discharge sites. It was demonstrated that the disequilibrium between 226Ra and 238U can be used to trace the extent of AMD impacts in nearby streams. Variations in 18O and 2 H enabled the fow of mining-impacted water to be traced from the ponds to nearby streams. Multivariate analysis yielded a three-factor model: Factor 1 was interpreted as being associated with AMD (from WRP#4) and Factor 2 with a Ca–Mo relationship associated with the chemical constitution of the ore and with the treatment of tailings wastes in the area (from TD); Factor 3 was interpreted as being associated with the natural infuence of geogenic processes on water quality in the area. The results of this study provide a scientifc basis for recommending appropriate remedial actions during mine decommissioning.pt_BR
dc.format.extentp. 830pt_BR
dc.language.isoen_USpt_BR
dc.rightsLpt_BR
dc.subjectHydrochemistry · Acid mine drainage · Uranium mine · Isotopes · Multivariate analyses · Water qualitypt_BR
dc.titleCombined hydrochemical, isotopic, and multivariate statistics techniques to assess the effects of discharges from a uranium mine on water quality in neighboring streamspt_BR
dc.typeArtigo Periódicopt_BR
dc.coverageIpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationUniversidade Federal de Juiz de Fora, UFJF, Juiz de Fora, MG, Brasilpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationUniversidade Federal de Minas Gerais,UFMH, MG, Brasilpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.identifier.fasciculo24pt_BR
dc.identifier.vol76pt_BR
dc.title.journalEnvironmental Earth Sciencespt_BR
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