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Evaluation of atmospheric deposition and patterns of polycyclic aromatic hydrocarbons in façades of historic monuments of Oporto (Portugal)

2013Journal article Open access
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dc.contributor.authorSlezakova, Klara
dc.contributor.authorCastro, Dionísia
dc.contributor.authorBegonha, Arlindo
dc.contributor.authorDelerue-Matos, Cristina
dc.contributor.authorAlvim-Ferraz, Maria da Conceição M.
dc.contributor.authorMorais, Simone
dc.contributor.authorPereira, Maria do Carmo
dc.date.accessioned2014-01-21T15:45:58Z
dc.date.available2014-01-21T15:45:58Z
dc.date.issued2013
dc.description.abstractAtmospheric pollution by motor vehicles is considered a relevant source of damage to architectural heritage. Thus the aim of this work was to assess the atmospheric depositions and patterns of polycyclic aromatic hydrocarbons (PAHs) in façades of historical monuments. Eighteen PAHs (16 PAHs considered by US EPA as priority pollutants, dibenzo[a,l]pyrene and benzo[j]fluoranthene) were determined in thin black layers collected from façades of two historical monuments: Hospital Santo António and Lapa Church (Oporto, Portugal). Scanning electron microscopy (SEM) was used for morphological and elemental characterisation of thin black layers; PAHs were quantified by microwave-assisted extraction combined with liquid chromatography (MAE-LC). The thickness of thin black layers were 80–110 μm and they contained significant levels of iron, sulfur, calcium and phosphorus. Total concentrations of 18 PAHs ranged from 7.74 to 147.92 ng/g (mean of 45.52 ng/g) in thin black layers of Hospital Santo António, giving a range three times lower than at Lapa Church (5.44– 429.26 ng/g; mean of 110.25 ng/g); four to six rings compounds accounted at both monuments approximately for 80–85% of ΣPAHs. The diagnostic ratios showed that traffic emissions were significant source of PAHs in thin black layers. Composition profiles of PAHs in thin black layers of both monuments were similar to those of ambient air, thus showing that air pollution has a significant impact on the conditions and stone decay of historical building façades. The obtained results confirm that historical monuments in urban areas act as passive repositories for air pollutants present in the surrounding atmosphere.por
dc.identifier.doi10.1080/03067319.2013.775279pt_PT
dc.identifier.doi10.1080/03067319.2013.775279pt_PT
dc.identifier.issn0306-7319
dc.identifier.issn1029-0397
dc.identifier.urihttp://hdl.handle.net/10400.22/3403
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTaylor & Francispor
dc.relation.ispartofseriesInternational Journal of Environmental Analytical Chemistry; Vol. 93, Issue 10
dc.relation.publisherversionhttp://www.tandfonline.com/doi/abs/10.1080/03067319.2013.775279#.UtlHd0r6Q24por
dc.subjectAir pollutionpor
dc.subjectPolycyclic aromatic hydrocarbons (PAHs)por
dc.subjectTraffic emissions historical monumentspor
dc.subjectThin black layerspor
dc.subjectMAE-LCpor
dc.titleEvaluation of atmospheric deposition and patterns of polycyclic aromatic hydrocarbons in façades of historic monuments of Oporto (Portugal)por
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1064por
oaire.citation.issueIssue 10por
oaire.citation.startPage1052por
oaire.citation.titleInternational Journal of Environmental Analytical Chemistrypor
oaire.citation.volumeVol. 93por
person.familyNameDelerue-Matos
person.familyNameAlvim-Ferraz
person.familyNameMorais
person.givenNameCristina
person.givenNameMaria da Conceição
person.givenNameSimone
person.identifier1598822
person.identifier.ciencia-id9A1A-43FB-5C27
person.identifier.ciencia-id621C-0AAB-ABF9
person.identifier.ciencia-idB111-BBFB-F200
person.identifier.orcid0000-0002-3924-776X
person.identifier.orcid0000-0001-8212-8718
person.identifier.orcid0000-0001-6433-5801
person.identifier.ridD-4990-2013
person.identifier.ridP-9868-2017
person.identifier.scopus-author-id6603741848
person.identifier.scopus-author-id6603921357
person.identifier.scopus-author-id7007053747
rcaap.rightsclosedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication09f6a7bd-2f15-42b0-adc5-04bd22210519
relation.isAuthorOfPublicationa9196bc3-6bc6-4270-8407-39356ba909b0
relation.isAuthorOfPublication7a9c7d63-a6c7-4159-b12d-b049b8c5c8f9
relation.isAuthorOfPublication.latestForDiscovery09f6a7bd-2f15-42b0-adc5-04bd22210519

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