Determination of gadolinium and erbium in Gd2O3 and Er2O3 nanoparticle samples by neutron activation analysis

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dc.contributor.authorCORREA, E.L.
dc.contributor.authorBOSCH-SANTOS, B.
dc.contributor.authorSAIKI, M.
dc.contributor.authorNASCIMENTO, N.M.
dc.contributor.authorEFFENBERGER, F.B.
dc.contributor.authorCARBONARI, A.W.
dc.contributor.authorPOTIENS, M.P.A.
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL TOPICAL MEETING ON INDUSTRIAL RADIATION AND RADIOISOTOPE MEASUREMENT APPLICATIONS, 10thpt_BR
dc.date.accessioned2017-10-24T12:38:15Z
dc.date.available2017-10-24T12:38:15Z
dc.date.eventoJuly 09-13, 2017pt_BR
dc.description.abstractAlong these years the applications of nanoparticles (NPs) in medicine as radiosensitizers have been widely studied, so several methods for its syntheses are presented. One of the best synthesis methods for this application is by thermal decomposition, which produces small NPs size (3-5 nm) with a narrow size distribution. On the other hand NPs synthetized by this method are covered by an organic material, hence making their mass measurement impossible by conventional means. In this study neutron activation analysis (NAA) was applied to determine Gd and Er concentrations in their NP oxides. The analysis of NPs composition is not commonly carried out. However these determinations are of great importance when the NPs are used in radiosensitization tests and magnetization measurements. NPs were synthetized by the method of thermal decomposition, which consisted in adding and mixing Gd and Er acetate in an organic solution by stirring and heating at high temperature (about 573 K) for about six hours. After cooling at room temperature the solution was centrifuged to obtain the NPs that were separated from the liquid. For NAA about 5 mg of post-synthesis and 873 K annealed samples of Gd2O3-NP and Er2O3-NP were irradiated together with their respective element standard. One-minute irradiations were carried out at the IEA-R1 research nuclear reactor. Element concentrations were determined by measuring 159Gd and 171Er gamma ray activities (energy of 363.56 keV and 308.3 keV respectively). Concentration of (19.88 ± 0.43) % of Gd and (23.53 ± 0.82) % of Er were obtained in the Gd2O3-NP and Er2O3-NP samples, respectively. These results are useful and have been used to establish experimental conditions for NPs magnetization and irradiation in radiotherapy beams for dose enhancement factor determination.pt_BR
dc.event.siglaIRRMApt_BR
dc.format.extent27-28pt_BR
dc.identifier.citationCORREA, E.L.; BOSCH-SANTOS, B.; SAIKI, M.; NASCIMENTO, N.M.; EFFENBERGER, F.B.; CARBONARI, A.W.; POTIENS, M.P.A. Determination of gadolinium and erbium in Gd2O3 and Er2O3 nanoparticle samples by neutron activation analysis. In: INTERNATIONAL TOPICAL MEETING ON INDUSTRIAL RADIATION AND RADIOISOTOPE MEASUREMENT APPLICATIONS, 10th, July 09-13, 2017, Chicago, IL, USA. <b>Abstract...</b> p. 27-28. Disponível em: http://repositorio.ipen.br/handle/123456789/27949.
dc.identifier.orcidhttps://orcid.org/0000-0002-4049-6720
dc.identifier.orcidhttps://orcid.org/0000-0002-4499-5949
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27949
dc.local.eventoChicago, IL, USApt_BR
dc.rightsopenAccesspt_BR
dc.titleDetermination of gadolinium and erbium in Gd2O3 and Er2O3 nanoparticle samples by neutron activation analysispt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorNATALIA MARTINS DO NASCIMENTO
ipen.autorMARIA DA PENHA ALBUQUERQUE POTIENS
ipen.autorARTUR WILSON CARBONARI
ipen.autorMITIKO SAIKI
ipen.autorBRIANNA BOSCH DOS SANTOS
ipen.autorEDUARDO DE LIMA CORREA
ipen.codigoautor14142
ipen.codigoautor346
ipen.codigoautor1437
ipen.codigoautor1178
ipen.codigoautor7480
ipen.codigoautor7498
ipen.contributor.ipenauthorNATALIA MARTINS DO NASCIMENTO
ipen.contributor.ipenauthorMARIA DA PENHA ALBUQUERQUE POTIENS
ipen.contributor.ipenauthorARTUR WILSON CARBONARI
ipen.contributor.ipenauthorMITIKO SAIKI
ipen.contributor.ipenauthorBRIANNA BOSCH DOS SANTOS
ipen.contributor.ipenauthorEDUARDO DE LIMA CORREA
ipen.date.recebimento17-10pt_BR
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc23259pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication98ed65cb-4c53-456e-9954-7dbdbbcda3b9
relation.isAuthorOfPublication30f213ae-321d-4d51-8763-0a2585255fb9
relation.isAuthorOfPublication8f236231-e73c-4182-a596-d83e49cd0404
relation.isAuthorOfPublication78e9df14-8ccf-4a31-a02f-4a8a4c111c14
relation.isAuthorOfPublication8eb536a6-8b2a-449c-aebf-392b54cd208f
relation.isAuthorOfPublication1f00087b-0c1b-413b-8464-2842b24a7328
relation.isAuthorOfPublication.latestForDiscovery1f00087b-0c1b-413b-8464-2842b24a7328
sigepi.autor.atividadeCORREA, E.L.:7498:330:Spt_BR
sigepi.autor.atividadeBOSCH-SANTOS, B.:7480:310:Npt_BR
sigepi.autor.atividadeSAIKI, M.:1178:320:Npt_BR
sigepi.autor.atividadeNASCIMENTO, N.M.:14142:310:Npt_BR
sigepi.autor.atividadeCARBONARI, A.W.:1437:310:Npt_BR
sigepi.autor.atividadePOTIENS, M.P.A.:346:330:Npt_BR
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