Natural and artificial nuclides in Salesópolis reservoir by gamma spectometry

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dc.contributor.authorSILVA, P.S.C.
dc.contributor.authorSEMMLER, R.
dc.contributor.authorZAHN, G.
dc.contributor.authorROCHA, F.R.
dc.contributor.authorDAMATTO, S.R.
dc.contributor.authorFAVARO, D.I.T.
dc.coverageInternacionalpt_BR
dc.creator.evento60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORSpt_BR
dc.date.accessioned2018-03-21T17:17:59Z
dc.date.available2018-03-21T17:17:59Z
dc.date.eventoNovember 28 - December 01, 2017pt_BR
dc.description.abstractNatural radioactivity is ubiquitous in the environment mainly due to the presence of the nuclides from the uranium and thorium series and K-40 in soil, water and sediments. Although in the South Hemisphere nuclear tests have been fewer in number than that in the North, artificial radionuclides can also be found spread at ground level. Salesópolis is located in the Metropolitan Region of São Paulo city (SPMR). The Usina Parque Rio Tietê (Salesópolis) reservoir belong to the Alto do Tietê system for the capture, storage and treatment of water for the São Paulo Metropolitan Region (SPMR). Therefore, the quality of the water, as well as, of sediments of this dam is of great importance. In this study, the activity concentrations of the natural uranium and thorium nuclides series, K-40 and the artificial Cs-137 were determined in a sediment core (T1B) with 42cm depth and sliced each 3 cm totalizing 14 samples, collected in the middle of the Salesópolis dam. Samples were sealed and wait 30 days for the radioactive equilibrium to be reached. The activity concentrations were measured by gamma spectrometry. Samples were counted and saved at regular intervals at a maximum of 160 000 seconds. The gross area were calculated for each peak and plotted against time and the counting rate was obtained by the sloop of the curve. The background and reference materials were treated in the same way. Results showed that 228Th varied from 44 to 150 Bq kg􀀀1 ; 228Ra, from 49 to 149 Bq kg􀀀1; 226Ra, from 26 to 88 Bq kg􀀀1; 210Pb, from 93 to 247 Bq kg􀀀1 ; 40K, from 127 to 852 Bq kg􀀀1 and 137Cs varied from 0.2 to 6.7 Bq kg􀀀1pt_BR
dc.format.extent97-97pt_BR
dc.identifier.citationSILVA, P.S.C.; SEMMLER, R.; ZAHN, G.; ROCHA, F.R.; DAMATTO, S.R.; FAVARO, D.I.T. Natural and artificial nuclides in Salesópolis reservoir by gamma spectometry. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. <b>Abstract...</b> São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 97-97. Disponível em: http://repositorio.ipen.br/handle/123456789/28798.
dc.identifier.orcidhttps://orcid.org/0000-0003-3237-8588
dc.identifier.orcidhttps://orcid.org/0000-0001-7733-0153
dc.identifier.orcidhttps://orcid.org/0000-0002-9351-9201
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28798
dc.localSão Paulo, SPpt_BR
dc.local.eventoSão Paulo, SPpt_BR
dc.publisherInstituto de Pesquisas Energéticas e Nuclearespt_BR
dc.rightsopenAccesspt_BR
dc.titleNatural and artificial nuclides in Salesópolis reservoir by gamma spectometrypt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorFABIO RODRIGO PIOVEZANI ROCHA
ipen.autorDEBORAH INES TEIXEIRA FAVARO
ipen.autorSANDRA REGINA DAMATTO
ipen.autorGUILHERME SOARES ZAHN
ipen.autorRENATO SEMMLER
ipen.autorPAULO SERGIO CARDOSO DA SILVA
ipen.codigoautor10351
ipen.codigoautor1374
ipen.codigoautor537
ipen.codigoautor950
ipen.codigoautor833
ipen.codigoautor2777
ipen.contributor.ipenauthorFABIO RODRIGO PIOVEZANI ROCHA
ipen.contributor.ipenauthorDEBORAH INES TEIXEIRA FAVARO
ipen.contributor.ipenauthorSANDRA REGINA DAMATTO
ipen.contributor.ipenauthorGUILHERME SOARES ZAHN
ipen.contributor.ipenauthorRENATO SEMMLER
ipen.contributor.ipenauthorPAULO SERGIO CARDOSO DA SILVA
ipen.date.recebimento18-03pt_BR
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc24620pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
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sigepi.autor.atividadeSILVA, P.S.C.:2777:320:Spt_BR
sigepi.autor.atividadeSEMMLER, R.:833:310:Npt_BR
sigepi.autor.atividadeZAHN, G.:950:310:Npt_BR
sigepi.autor.atividadeROCHA, F.R.:10351:-1:Npt_BR
sigepi.autor.atividadeDAMATTO, S.R.:537:340:Npt_BR
sigepi.autor.atividadeFAVARO, D.I.T.:1374:320:Npt_BR
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