Application of bias correction methods to improve U3Si2 sample preparation for quantitative analysis by WDXRF

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dc.contributor.authorSCAPIN, MARCOS A.
dc.contributor.authorGUILHEN, SABINE N.
dc.contributor.authorAZEVEDO, LUCIANA C. de
dc.contributor.authorCOTRIM, MARYCEL E.B.
dc.contributor.authorPIRES, MARIA A.F.
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL NUCLEAR ATLANTIC CONFERENCEpt_BR
dc.date.accessioned2018-01-08T16:45:19Z
dc.date.available2018-01-08T16:45:19Z
dc.date.eventoOctober 22-27, 2017pt_BR
dc.description.abstractThe determination of silicon (Si), total uranium (U) and impurities in uranium-silicide (U3Si2) samples by wavelength dispersion X-ray fluorescence technique (WDXRF) has been already validated and is currently implemented at IPEN’s X-Ray Fluorescence Laboratory (IPEN-CNEN/SP) in São Paulo, Brazil. Sample preparation requires the use of approximately 3 g of H3BO3 as sample holder and 1.8 g of U3Si2. However, because boron is a neutron absorber, this procedure precludes U3Si2 sample’s recovery, which, in time, considering routinely analysis, may account for significant unusable uranium waste. An estimated average of 15 samples per month are expected to be analyzed by WDXRF, resulting in approx. 320 g of U3Si2 that wouldn’t return to the nuclear fuel cycle. This not only impacts in production losses, but generates another problem: radioactive waste management. The purpose of this paper is to present the mathematical models that may be applied for the correction of systematic errors when H3BO3 sample holder is substituted by cellulose-acetate {[C6H7O2(OH)3-m(OOCCH3)m], m = 0~3}, thus enabling U3Si2 sample’s recovery. The results demonstrate that the adopted mathematical model is statistically satisfactory, allowing the optimization of the procedure.pt_BR
dc.event.siglaINACpt_BR
dc.identifier.citationSCAPIN, MARCOS A.; GUILHEN, SABINE N.; AZEVEDO, LUCIANA C. de; COTRIM, MARYCEL E.B.; PIRES, MARIA A.F. Application of bias correction methods to improve U3Si2 sample preparation for quantitative analysis by WDXRF. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. <b>Proceedings...</b> Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/28246.
dc.identifier.orcidhttps://orcid.org/0000-0002-6462-4758
dc.identifier.orcidhttps://orcid.org/0000-0003-2604-1225
dc.identifier.orcidhttps://orcid.org/0000-0002-0606-4369
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28246
dc.localRio de Janeiro, RJpt_BR
dc.local.eventoBelo Horizonte, MGpt_BR
dc.publisherAssociação Brasileira de Energia Nuclearpt_BR
dc.rightsopenAccesspt_BR
dc.subjectacetates
dc.subjectboric acid
dc.subjectboron 10
dc.subjectcorrections
dc.subjecterrors
dc.subjectimpurities
dc.subjectmathematical models
dc.subjectoptimization
dc.subjectquantitative chemical analysis
dc.subjectsample preparation
dc.subjecturanium silicides
dc.titleApplication of bias correction methods to improve U3Si2 sample preparation for quantitative analysis by WDXRFpt_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorLUCIANA CAVALCANTI DE AZEVEDO
ipen.autorMARIA APARECIDA FAUSTINO PIRES
ipen.autorMARYCEL ELENA BARBOZA COTRIM
ipen.autorSABINE NEUSATZ GUILHEN
ipen.autorMARCOS ANTONIO SCAPIN
ipen.codigoautor14441
ipen.codigoautor1327
ipen.codigoautor515
ipen.codigoautor5931
ipen.codigoautor836
ipen.contributor.ipenauthorLUCIANA CAVALCANTI DE AZEVEDO
ipen.contributor.ipenauthorMARIA APARECIDA FAUSTINO PIRES
ipen.contributor.ipenauthorMARYCEL ELENA BARBOZA COTRIM
ipen.contributor.ipenauthorSABINE NEUSATZ GUILHEN
ipen.contributor.ipenauthorMARCOS ANTONIO SCAPIN
ipen.date.recebimento18-01pt_BR
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc24071pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
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sigepi.autor.atividadeSCAPIN, MARCOS A.:836:510:Spt_BR
sigepi.autor.atividadeGUILHEN, SABINE N.:5931:511:Npt_BR
sigepi.autor.atividadeAZEVEDO, LUCIANA C. DE:14441:-1:Npt_BR
sigepi.autor.atividadeCOTRIM, MARYCEL E.B.:515:510:Npt_BR
sigepi.autor.atividadePIRES, MARIA A.F.:1327:510:Npt_BR
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