Number Concentrations and Modal Structure of Indoor/Outdoor Fine Particles in Four European Cities

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dc.contributor.author Lazaridis, Mihalis
dc.contributor.author Eleftheriadis, Kostas
dc.contributor.author Zdimal, Vladia
dc.contributor.author Schwarz, Jaroslav
dc.contributor.author Wagner, Zdenek
dc.contributor.author Ondracek, Jakub
dc.contributor.author Drossinos, Yannis
dc.contributor.author Glytsos, Thodoros
dc.contributor.author Vratolis, Sterios
dc.contributor.author Torseth, Kjetil
dc.contributor.author Moravec, Pavel
dc.contributor.author Hussein, Tareq
dc.contributor.author Smolik, Jiri
dc.date.accessioned 2018-02-23T09:19:00Z
dc.date.available 2018-02-23T09:19:00Z
dc.date.issued 2017-01
dc.identifier.citation Lazaridis , M , Eleftheriadis , K , Zdimal , V , Schwarz , J , Wagner , Z , Ondracek , J , Drossinos , Y , Glytsos , T , Vratolis , S , Torseth , K , Moravec , P , Hussein , T & Smolik , J 2017 , ' Number Concentrations and Modal Structure of Indoor/Outdoor Fine Particles in Four European Cities ' , Aerosol and Air Quality Research , vol. 17 , no. 1 , pp. 131-146 . https://doi.org/10.4209/aaqr.2015.04.0267
dc.identifier.other PURE: 99358058
dc.identifier.other PURE UUID: 652ca592-fc4a-43d1-811e-8a02a3570df7
dc.identifier.other WOS: 000392311500012
dc.identifier.other Scopus: 85008198021
dc.identifier.other ORCID: /0000-0002-0241-6435/work/53516063
dc.identifier.uri http://hdl.handle.net/10138/232787
dc.description.abstract Indoor/outdoor aerosol size distribution was measured in four European cities (Oslo-Norway, Prague-Czech Republic, Milan-Italy and Athens-Greece) during 2002 in order to examine the differences in the characteristics of the indoor/outdoor modal structure and to evaluate the effect of indoor sources to the aerosol size distributions. All the measurement sites were naturally ventilated and were occupied during the campaigns by permanent residents or for certain time periods by the technical staff responsible for the instrumentation. Outdoor particle number (PN) concentrations presented the higher values in Milan and Athens (median values 1.4 x 10(4) # cm(-3) and 2.9 x 10(4) # cm(-3) respectively) as a result of elevated outdoor emissions and led to correspondingly higher indoor values compared to Oslo and Prague. In absence of indoor activities, the indoor concentrations followed the fluctuations of the outdoor concentrations in all the measurement sites. Indoor activities (cooking, smoking, etc.) resulted in elevated indoor PN concentrations (maximum values ranging between 1.7 x 10(5) # cm(-3) and 3.2 x 10(5) # cm(-3)) and to I/O ratios higher than one. The I/O ratios were size dependant and for periods without indoor activities, they presented the lowest values for particles <50 nm (0.51 +/- 0.15) and the ratios increased with fine particle size (0.79 +/- 0.12 for particles between 100-200 nm). The analysis of the modal structure showed that the indoor aerosol size distribution characteristics differ from the outdoors under the effect of indoor sources. The percentage of unimodal size distributions increased during indoor emissions, compared to periods without indoor sources, along with the number concentration of Aitken mode particles, indicating emissions in specific size ranges according to the type of the indoor source. en
dc.format.extent 16
dc.language.iso eng
dc.relation.ispartof Aerosol and Air Quality Research
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Indoor/Outdoor aerosol
dc.subject I/O ratio
dc.subject Modal structure
dc.subject Indoor sources
dc.subject AIRBORNE PARTICULATE MATTER
dc.subject INDOOR AIR-QUALITY
dc.subject ULTRAFINE PARTICLES
dc.subject SIZE DISTRIBUTIONS
dc.subject RESIDENTIAL HOUSES
dc.subject PERSONAL EXPOSURES
dc.subject AEROSOL-SIZE
dc.subject URBAN AREAS
dc.subject OUTDOOR
dc.subject HEALTH
dc.subject 114 Physical sciences
dc.subject 1172 Environmental sciences
dc.title Number Concentrations and Modal Structure of Indoor/Outdoor Fine Particles in Four European Cities en
dc.type Article
dc.contributor.organization Institute for Atmospheric and Earth System Research (INAR)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.4209/aaqr.2015.04.0267
dc.relation.issn 1680-8584
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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