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

Show simple item record Lazaridis, Mihalis Eleftheriadis, Kostas Zdimal, Vladia Schwarz, Jaroslav Wagner, Zdenek Ondracek, Jakub Drossinos, Yannis Glytsos, Thodoros Vratolis, Sterios Torseth, Kjetil Moravec, Pavel Hussein, Tareq Smolik, Jiri 2018-02-23T09:19:00Z 2018-02-23T09:19:00Z 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 .
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.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 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.issn 1680-8584
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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