Sedimentary profiles from a water supply reservoir at São Paulo, Brazil

Página do item simplificado
dc.contributor.authorSILVA, S.A.pt_BR
dc.contributor.authorJUNQUEIRA, L.S.pt_BR
dc.contributor.authorFRANKLIN, R.L.pt_BR
dc.contributor.authorSILVA, W.L.pt_BR
dc.contributor.authorFAVARO, D.I.T.pt_BR
dc.contributor.authorMOREIRA, E.G.pt_BR
dc.contributor.editorACHARYA, R.pt_BR
dc.contributor.editorSWAIN, K.K.pt_BR
dc.contributor.editorSATHYAPRIYA, R.S.pt_BR
dc.contributor.editorREDDY, A.V.R.pt_BR
dc.contributor.editorPUJARI, P.K.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONFERENCE ON MODERN TRENDS IN ACTIVATION ANALYSIS, 15thpt_BR
dc.date.accessioned2020-04-01T13:44:08Z
dc.date.available2020-04-01T13:44:08Z
dc.date.eventoNovember 17-22, 2019pt_BR
dc.description.abstractA research project has been conducted by the Environmental Company of São Paulo State (CETESB) and the Nuclear and Energy Research Institute (IPEN) in important water supply reservoirs at São Paulo State in order to perform a wide evaluation on the content of rare earths and some trace elements in sediment profiles. In the present study, preliminary results for two sampling campaigns at the Graminha reservoir are presented:February/2015 (sites 1 and 3) and August / 2015 (sites 1 and 2). Sediment core samples (around 90 cm long) were collected in the dam and sliced at every 2.5 cm. Instrumental Neutron Activation Analysis (INAA) was applied to the sediment samples in order to determine some trace elements (As, Cr, Th, U and Zn) and rare earth elements (REE) (Ce, Eu, La, Lu, Nd, Sm, Tb and Yb). The analytical methodology validation was performed by means of certified reference material analyses. As, Cr and Zn concentration values were compared to the oriented values from CCME (Canada) (TEL and PEL). Sediment quality was classified as good or very good for these elements according these criteria. Enrichment factor (EF) and Geoaccumulation Index (IGeo index)1were applied to the results by using the concentration values of the last layer of the 90.0 cm profile as background values for sediment contamination index assessment. EF>1.5 was found for REE, U and Th in the middle of the sediment profiles,in all sampling points, indicative of anthropogenic contribution. IGeo values in the range of1<IGeo<5 were found, being the sediments classified as moderate to very polluted for these elements. The normalization of REE concentrations with respect to a geological reference value, a useful tool to obtain a comparison among information from contamination sources2 was used in the present study by using NASC (North American Shale Composite) and PAAS (Post Archean Australian Shale) normalization as reference values. In addition, La/Sm, La/Yb and Sm/Yb ratios were calculated and discussed.The present study data are intended to start a sediment REE concentration data bank in water supply reservoirs and maybe they can be used in the future to establish legal limits for CETESB.pt_BR
dc.event.siglaMTAApt_BR
dc.format.extent79-79pt_BR
dc.identifier.citationSILVA, S.A.; JUNQUEIRA, L.S.; FRANKLIN, R.L.; SILVA, W.L.; FAVARO, D.I.T.; MOREIRA, E.G. Sedimentary profiles from a water supply reservoir at São Paulo, Brazil: trace and rare earth elements assessment by INAA. In: ACHARYA, R. (ed.); SWAIN, K.K. (ed.); SATHYAPRIYA, R.S. (ed.); REDDY, A.V.R. (ed.); PUJARI, P.K. (ed.). In: INTERNATIONAL CONFERENCE ON MODERN TRENDS IN ACTIVATION ANALYSIS, 15th, November 17-22, 2019, Mumbai, India. <b>Abstract...</b> Mumbai, India: Bhabha Atomic Research Centre, 2019. p. 79-79. Disponível em: http://repositorio.ipen.br/handle/123456789/31024.
dc.identifier.orcid0000-0002-0083-2523pt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31024
dc.localMumbai, Indiapt_BR
dc.local.eventoMumbai, Indiapt_BR
dc.publisherBhabha Atomic Research Centrept_BR
dc.rightsopenAccesspt_BR
dc.titleSedimentary profiles from a water supply reservoir at São Paulo, Brazilpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorEDSON GONCALVES MOREIRA
ipen.autorDEBORAH INES TEIXEIRA FAVARO
ipen.autorLUCAS STANO JUNQUEIRA
ipen.codigoautor860
ipen.codigoautor1374
ipen.codigoautor14534
ipen.contributor.ipenauthorEDSON GONCALVES MOREIRA
ipen.contributor.ipenauthorDEBORAH INES TEIXEIRA FAVARO
ipen.contributor.ipenauthorLUCAS STANO JUNQUEIRA
ipen.date.recebimento20-04
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc26819pt_BR
ipen.notas.internasAbstractpt_BR
ipen.subtitulotrace and rare earth elements assessment by INAApt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationfdac8528-3b24-47a1-9906-6c20d6a32b56
relation.isAuthorOfPublication2c3aeafc-6cda-4a61-a4e3-43e60ff8dd2d
relation.isAuthorOfPublication2a6222d8-02b0-48af-a02b-aef4e72579d9
relation.isAuthorOfPublication.latestForDiscovery2a6222d8-02b0-48af-a02b-aef4e72579d9
sigepi.autor.atividadeMOREIRA, E.G.:860:320:Npt_BR
sigepi.autor.atividadeFAVARO, D.I.T.:1374:320:Npt_BR
sigepi.autor.atividadeJUNQUEIRA, L.S.:14534:320:Npt_BR
Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
26819.pdf
Tamanho:
290.95 KB
Formato:
Adobe Portable Document Format
Descrição:
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar
Coleções
Eventos - Resumos