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Impact of maritime air mass trajectories on the Western European coast urban aerosol

2013-03Journal article Open access
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dc.contributor.authorAlmeida, Susana Marta
dc.contributor.authorSilva, A. I.
dc.contributor.authorFreitas, M. C.
dc.contributor.authorDzung, H. M.
dc.contributor.authorCaseiro, A.
dc.contributor.authorPio, C. A.
dc.date.accessioned2013-04-23T15:18:31Z
dc.date.available2013-04-23T15:18:31Z
dc.date.issued2013-03
dc.description.abstractLisbon is the largest urban area in the Western European coast. Due to this geographical position the Atlantic Ocean serves as an important source of particles and plays an important role in many atmospheric processes. The main objectives of this study were to (1) perform a chemical characterization of particulate matter (PM2.5) sampled in Lisbon, (2) identify the main sources of particles, (3) determine PM contribution to this urban area, and (4) assess the impact of maritime air mass trajectories on concentration and composition of respirable PM sampled in Lisbon. During 2007, PM2.5 was collected on a daily basis in the center of Lisbon with a Partisol sampler. The exposed Teflon filters were measured by gravimetry and cut into two parts: one for analysis by instrumental neutron activation analysis (INAA) and the other by ion chromatography (IC). Principal component analysis (PCA) and multilinear regression analysis (MLRA) were used to identify possible sources of PM2.5 and determine mass contribution. Five main groups of sources were identified: secondary aerosols, traffic, calcium, soil, and sea. Four-day backtracking trajectories ending in Lisbon at the starting sampling time were calculated using the HYSPLIT model. Results showed that maritime transport scenarios were frequent. These episodes were characterized by a significant decrease of anthropogenic aerosol concentrations and exerted a significant role on air quality in this urban area.por
dc.identifier.citationAlmeida SM, Silva AI, Freitas MC, Dzung HM, Caseiro A, Pio CA. Impact of maritime air mass trajectories on the Western European coast urban aerosol. J Toxicol Environ Health A. 2013;76(4-5):252-62.por
dc.identifier.issn0098-4108
dc.identifier.urihttp://hdl.handle.net/10400.21/2460
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTaylor & Francispor
dc.relation.publisherversionhttp://www.tandfonline.com/doi/abs/10.1080/15287394.2013.757201?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmedpor
dc.subjectEnvironmental healthpor
dc.subjectMaritime air masspor
dc.subjectAerosol concentrationpor
dc.subjectPortugalpor
dc.subjectLisboapor
dc.titleImpact of maritime air mass trajectories on the Western European coast urban aerosolpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage262por
oaire.citation.startPage252por
oaire.citation.titleJournal of Toxicology and Environmental Health. Part Apor
oaire.citation.volume76por
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor

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