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dc.contributor.authorYttri, Karl Espen
dc.contributor.authorDye, C
dc.contributor.authorBraathen, OA
dc.contributor.authorSimpson, D
dc.contributor.authorSteinnes, Eiliv
dc.date.accessioned2015-09-30T08:41:51Z
dc.date.accessioned2015-11-09T15:40:36Z
dc.date.available2015-09-30T08:41:51Z
dc.date.available2015-11-09T15:40:36Z
dc.date.issued2009
dc.identifier.citationAtmospheric Chemistry And Physics 2009, 9(6):2007-2020nb_NO
dc.identifier.issn1680-7324
dc.identifier.urihttp://hdl.handle.net/11250/2359827
dc.description.abstractLittle is known regarding levels and source strength of carbonaceous aerosols in Scandinavia. In the present study, ambient aerosol (PM10 and PM2.5) concentrations of elemental carbon (EC), organic carbon (OC), waterinsoluble organic carbon (WINSOC), and water-soluble organic carbon (WSOC) are reported for a curbside site, an urban background site, and a suburban site in Norway in order to investigate their spatial and seasonal variations. Aerosol filter samples were collected using tandem filter sampling to correct for the positive sampling artefact introduced by volatile and semivolatile OC. Analyses were performed using the thermal optical transmission (TOT) instrument from Sunset Lab Inc., which corrects for charring during analysis. Finally, we estimated the relative contribution of OC from wood burning based on the samples content of levoglucosan. Levels of EC varied by more than one order of magnitude between sites, likely due to the higher impact of vehicular traffic at the curbside and the urban background sites. In winter, the level of particulate organic carbon (OCp) at the suburban site was equal to (for PM10) or even higher (for PM2.5) than the levels observed at the curbside and the urban background sites. This finding was attributed to the impact of residential wood burning at the suburban site in winter, which was confirmed by a high mean concentration of levoglucosan (407 ngm−3). This finding indicates that exposure to primary combustion derived OCp could be equally high in residential areas as in a city center. It is demonstrated that OCp from wood burning (OCwood) accounted for almost all OCp at the suburban site in winter, allowing a new estimate of the ratio TCp/levoglucosan for both PM10 and PM2.5. Particulate carbonaceous material (PCM=Organic matter+Elemental matter) accounted for 46–83% of PM10 at the sites studied, thus being the major fraction.nb_NO
dc.language.isoengnb_NO
dc.publisherEuropean Geosciences Unionnb_NO
dc.titleCarbonaceous aerosols in Norwegian urban areasnb_NO
dc.typeJournal articlenb_NO
dc.typePeer revieweden_GB
dc.date.updated2015-09-30T08:41:51Z
dc.source.pagenumber2007-2020nb_NO
dc.source.volume9nb_NO
dc.source.journalAtmospheric Chemistry And Physicsnb_NO
dc.source.issue6nb_NO
dc.identifier.doi10.5194/acp-9-2007-2009
dc.identifier.cristin354575
dc.description.localcode© Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License.nb_NO


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