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Size distribution of polycyclic aromatic hydrocarbons in a roadway tunnel in Lisbon, Portugal

2011-06Journal article Open access
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dc.contributor.authorOliveira, Cesar
dc.contributor.authorMartins, Natércia
dc.contributor.authorTavares, João
dc.contributor.authorPio, Casimiro
dc.contributor.authorCerqueira, Mário
dc.contributor.authorMatos, Manuel
dc.contributor.authorSilva, Hugo
dc.contributor.authorOliveira, Cristina
dc.contributor.authorCamões, Filomena
dc.date.accessioned2013-02-16T18:46:12Z
dc.date.available2013-02-16T18:46:12Z
dc.date.issued2011-06
dc.description.abstractAtmospheric aerosols of four aerodynamic size ranges were collected using high volume cascade impactors in an extremely busy roadway tunnel in Lisbon (Portugal). Dust deposited on the tunnel walls and guardrails was also collected. Average particle mass concentrations in the tunnel atmosphere were more than 30 times higher than in the outside urban background air, revealing its origins almost exclusively from fresh vehicle emissions. Most of the aerosol mass was concentrated in submicrometer fractions (65%), and polycyclic aromatic hydrocarbons (PAH) were even more concentrated in the finer particles with an average of 84% of total PAH present in sizes smaller than 0.49 mu m. The most abundant PAH were methylated phenanthrenes, fluoranthene and pyrene. About 46% of the total PAH mass was attributed to lower molecular weight compounds (two and three rings), suggesting a strong influence of diesel vehicle emissions on the production of local particulate PAH. The application of diagnostic ratios confirmed the relevance of this source of PAH in the tunnel ambient air. Deposited dust presented PAH profiles similar to the coarser aerosol size range, in agreement with the predominant origin of coarser aerosol particles from soil dust resuspension and vehicle wear products. (c) 201 1 Elsevier Ltd. All rights reserved.por
dc.identifier.citationOLIVEIRA, Cesar; MARTINS, Natércia; TAVARES, João; PIO, Casimiro; CERQUEIRA, Mário; MATOS, Manuel; SILVA, Hugo; OLIVEIRA, Cristina; CAMÕES, Filomena - Size distribution of polycyclic aromatic hydrocarbons in a roadway tunnel in Lisbon, Portugal. Chemosphere. ISSN 0045-6535. Vol. 83, n.º 11 (2011) p. 1588-1596.por
dc.identifier.issn0045-6535
dc.identifier.urihttp://hdl.handle.net/10400.21/2240
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherPergamon-Elsevier Science LTDpor
dc.subjectTunnelpor
dc.subjectPolycyclic aromatic hydrocarbonspor
dc.subjectAerosolspor
dc.subjectSize distributionpor
dc.subjectDiesel passenger carpor
dc.subjectOn-roadpor
dc.subjectParticulate matterpor
dc.subjectAmbient airpor
dc.subjectSource apportionmentpor
dc.subjectEmission factorspor
dc.subjectMotor-vehiclespor
dc.subjectMobile sourcespor
dc.subjectExhaust plumepor
dc.subjectUrban landscapepor
dc.titleSize distribution of polycyclic aromatic hydrocarbons in a roadway tunnel in Lisbon, Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOxfordpor
oaire.citation.endPage1596por
oaire.citation.issue11por
oaire.citation.startPage1588por
oaire.citation.titleChemospherepor
oaire.citation.volume83por
person.familyNamePio
person.familyNameCerqueira
person.familyNameMatos
person.familyNameSilva
person.givenNameCasimiro
person.givenNameMário
person.givenNameManuel
person.givenNameHugo
person.identifier.ciencia-id6510-B1FA-2AED
person.identifier.ciencia-id501C-93A7-B330
person.identifier.ciencia-id2E14-6146-CC46
person.identifier.orcid0000-0002-3531-8620
person.identifier.orcid0000-0002-8342-2967
person.identifier.orcid0000-0002-5240-8070
person.identifier.orcid0000-0003-1585-9099
person.identifier.ridJ-1830-2018
person.identifier.scopus-author-id7005222105
person.identifier.scopus-author-id7005005247
person.identifier.scopus-author-id35588347400
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication.latestForDiscoverybb104304-4226-4d6d-babf-a872d11e783b

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