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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57912
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dc.creatorP. Blanco Rodríguezpt_BR
dc.creatorJ.C. Lozanopt_BR
dc.creatorF. Vera Tomépt_BR
dc.creatorCristina Prietopt_BR
dc.creatorAdriana de Souza Medeiros Batistapt_BR
dc.date.accessioned2023-08-17T20:55:38Z-
dc.date.available2023-08-17T20:55:38Z-
dc.date.issued2018-04-17-
dc.citation.volume205pt_BR
dc.citation.issue2018pt_BR
dc.citation.spage188pt_BR
dc.citation.epage193pt_BR
dc.identifier.issn0045-6535pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57912-
dc.description.resumoIn order to clarify some of the assumptions and approximations about the use of the distribution co efficient Kd for 226Ra in soils, a systematic study has been performed using centrifugation to extract the soil solution. The separated fractions of the soil solution have different kinetics with respect to the sorption process in the soil, which may in turn condition the final chemical composition and even the speciation of the radionuclides in solution. In the experimental design of this study three factors were considered: the moisture level in the incubation process, incubation time and the speed of centrifugation. Also, three levels were chosen for each factor. In order to analyze the influence of the structural characteristics of the soil, this study was performed with three textural fractions: coarse sand, fine sand, and silt and clay, obtained from an only soil. Also, the soil was naturally enriched with radionuclides ofthe 238U series. An analysis of variance (ANOVA) was performed in order to assess the influence of the factors studied on the distribution coefficient of 226Ra. The results indicate that different behaviors can be observed depending on the structural characteristic of the soil. In the case of particle size, the soil with the largest grain size showed that the incubation process parameters influence the equilibrium level achieved, while in the case of the smallest edaphic particles, radium is not homogeneously distributed in the soil solution and the Kd value is dependent on the speed of centrifugation.pt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEMpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofChemosphere-
dc.rightsAcesso Restritopt_BR
dc.subjectCentrifugationpt_BR
dc.subjectDistribution coefficientpt_BR
dc.subjectRadiumpt_BR
dc.subjectSoil solutionpt_BR
dc.subject.otherCentrifugaçãopt_BR
dc.subject.otherRádio (Elemento)pt_BR
dc.titleInfluence of soil conditions on the distribution coefficients of 226 Ra in natural soilspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/abs/pii/S0045653518307422?via%3Dihubpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6834-7551pt_BR
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