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Alterações recentes nas razões isotópicas de Pb em sedimentos do Canhão Submarino de Cascais, Portugal

2009-12Conference object Open access
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dc.contributor.authorMil-Homens, Mário
dc.contributor.authorCaetano, M.
dc.contributor.authorLebreiro, Susana
dc.contributor.authorCosta, A. M.
dc.contributor.authorRichter, T.
dc.contributor.authorCesário, R.
dc.contributor.authorBrito, Pedro Oliveira
dc.contributor.authorDe Stigter, H.
dc.contributor.authorBoer, Wim
dc.contributor.authorTrancoso, Maria Ascensão
dc.contributor.authorMouro, F.
dc.date.accessioned2010-07-08T16:48:09Z
dc.date.available2010-07-08T16:48:09Z
dc.date.issued2009-12
dc.description.abstractTemporal variations in lead concentrations and stable lead isotopic ratios in two sediment cores from the Cascais Canyon shows changes in sources of Pb during the last two centuries. The increase of total Pb contents wIth the evolution of Pb ratio recorded in both cores reveals the Increase of Pb from industrial sources. Nevertheless, this increase is lower in deeper core location (252-32) due to dilution and mixing with uncontaminated marine materials. An isotopic shift towards lower Pb/Pb in the shallower core (252-35) during the 1970s may reflect the increasing number of vehicles in the Lisboa area during that time.pt
dc.identifier.citationMil-Homens, Mário; Caetano, M.; Lebreiro, Susana; Costa, A. M.; Richter, T.; Cesário, R.; Brito, Pedro; De Stigter, H.; Boer, Wim; Trancoso, M. Ascenção; Mouro, F. - Alterações recentes nas razões isotópicas de Pb em sedimentos do Canhão Submarino de Cascais, Portugal. In: 6º Simposio sobre el Margen Ibérico Atlántico : MIA 09, Oviedo, 1-5 de diciembre de 2009pt
dc.identifier.urihttp://hdl.handle.net/10400.9/827
dc.language.isoengpt
dc.subjectContaminação de águaspt
dc.subjectSedimentos marinhospt
dc.subjectChumbopt
dc.subjectCanhão Submarino de Cascais (Portugal)pt
dc.subjectMargem Continental Portuguesapt
dc.titleAlterações recentes nas razões isotópicas de Pb em sedimentos do Canhão Submarino de Cascais, Portugalpt
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceOviedo, Españapt
oaire.citation.title6º Simposio sobre el Margen Ibérico Atlántico : MIA 09, 1-5 de diciembre de 2009pt
rcaap.rightsopenAccesspt
rcaap.typeconferenceObjectpt

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