Evaluation of seawater contamination with benzene, toluene and xylene in the Ubatuba region and study of their degradation by ionizing radiation

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dc.contributor.authorALMEIDA, KELLY C.S. dept_BR
dc.contributor.authorCARDOSO, VANESSA M.pt_BR
dc.contributor.authorMORI, MANOEL N.pt_BR
dc.contributor.authorDUARTE, CELINA L.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15thpt_BR
dc.date.accessioned2014-11-17T17:59:41Zpt_BR
dc.date.accessioned2014-11-18T18:06:48Zpt_BR
dc.date.accessioned2015-04-02T06:15:38Z
dc.date.available2014-11-17T17:59:41Zpt_BR
dc.date.available2014-11-18T18:06:48Zpt_BR
dc.date.available2015-04-02T06:15:38Z
dc.date.eventoSept. 30 - Oct. 5, 2007pt_BR
dc.description.abstractA major concern with leaking petroleum is the environmental contamination by toxic and low water-soluble components such as benzene, toluene, and xylenes (BTX). These hydrocarbons have relatively high pollution potential because of their significant toxicity. The objective of this study was to evaluate the contamination of seawater by the main pollutants of the output and transport of petroleum, such as benzene, toluene, and xylenes, and their removal by exposure to ionizing radiation. The studied region was Ubatuba region, SP, between 23º26’S and 23º46’S of latitude and 45º02’W and 45º11’W of longitude, area of carry and output of petroleum, and samples were collected from November, 2003 to July, 2005. For BTX in seawater analysis, the Purge and Trap concentrator with FIDGC detector showed significantly higher sensibility than headspace concentrator with MSGC detector. The minimal detected limits (MDL) obtained at FIDGC were of 0.50 g/L for benzene, 0.70 g/L for toluene, and 1.54 g/L for xylenes, and the obtained experimental variability was 15%. While the concentrator type Headspace system with MS detector showed higher MDL, about of 9.30 mg/L for benzene, 8.50 mg/L for toluene, and 9.80 mg/L for xylenes, and 10% of experimental variability. In the studied area the benzene concentration varied from 1.0 g/L to 2.0 g/L, the concentration of toluene varied from < 0.70 g/L to 3.24 g/L and the maximum value of xylenes observed was of 2.92 g/L. The seawater samples contaminated with BTX standard were exposed to ionizing radiation using a source of 60Co. The results showed a removal from 10% to 40% of benzene at 20kGy absorbed doses and concentration of 35.1 mg/L and 70.2 mg/L, respectively. For toluene the removal were from 20% to 60% with 15kGy and xylenes were removed from 20% to 80% with 15kGy and similar concentrations.
dc.event.siglaINAC; ENAN; ENFIRpt_BR
dc.identifier.citationALMEIDA, KELLY C.S. de; CARDOSO, VANESSA M.; MORI, MANOEL N.; DUARTE, CELINA L. Evaluation of seawater contamination with benzene, toluene and xylene in the Ubatuba region and study of their degradation by ionizing radiation. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15th, Sept. 30 - Oct. 5, 2007, Santos, SP. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/15701.
dc.identifier.orcidhttps://orcid.org/0000-0001-5739-7502
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/15701pt_BR
dc.local.eventoSantos, SPpt_BR
dc.publisherSao Paulo: ABEN, 2007pt_BR
dc.rightsopenAccesspt_BR
dc.subjectbenzenept_BR
dc.subjectcobalt 60pt_BR
dc.subjectdose-response relationshipspt_BR
dc.subjectexperimental datapt_BR
dc.subjectgamma radiationpt_BR
dc.subjectgas chromatographypt_BR
dc.subjectoil spillspt_BR
dc.subjectpollutantspt_BR
dc.subjectradiation dosespt_BR
dc.subjectradiolysispt_BR
dc.subjectremedial actionpt_BR
dc.subjectseawaterpt_BR
dc.subjecttoluenept_BR
dc.subjectwater pollutionpt_BR
dc.subjectxylenespt_BR
dc.titleEvaluation of seawater contamination with benzene, toluene and xylene in the Ubatuba region and study of their degradation by ionizing radiationpt_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorCELINA LOPES DUARTE
ipen.autorMANOEL NUNES MORI
ipen.autorVANESSA MIGUEL CARDOSO
ipen.autorKELLY CRISTINA SANTANA DE ALMEIDA
ipen.codigoautor143
ipen.codigoautor169
ipen.codigoautor3938
ipen.codigoautor3371
ipen.contributor.ipenauthorCELINA LOPES DUARTE
ipen.contributor.ipenauthorMANOEL NUNES MORI
ipen.contributor.ipenauthorVANESSA MIGUEL CARDOSO
ipen.contributor.ipenauthorKELLY CRISTINA SANTANA DE ALMEIDA
ipen.date.recebimento07-12pt_BR
ipen.event.datapadronizada2007pt_BR
ipen.identifier.ipendoc11938pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
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relation.isAuthorOfPublicationdc02869d-55ab-4de8-bfd2-0603a0f0c4db
relation.isAuthorOfPublication1cf262ef-3b8a-45da-a01e-3b69668847ba
relation.isAuthorOfPublication985d1288-4122-4fa4-8b03-15a291283f53
relation.isAuthorOfPublication.latestForDiscovery985d1288-4122-4fa4-8b03-15a291283f53
sigepi.autor.atividadeALMEIDA, KELLY C.S. DE:3371:28:Spt_BR
sigepi.autor.atividadeCARDOSO, VANESSA M.:3938:2:Npt_BR
sigepi.autor.atividadeMORI, MANOEL N.:169:2:Npt_BR
sigepi.autor.atividadeDUARTE, CELINA L.:143:2:Npt_BR
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