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Garbarienė, I.* ; Pauraitė, J.* ; Pashneva, D.* ; Minderytė, A.* ; Sarka, K.* ; Dudoitis, V.* ; Davulienė, L.* ; Gaspariūnas, M.* ; Kovalevskij, V.* ; Lingis, D.* ; Bučinskas, L.* ; Šapolaitė, J.* ; Ežerinskis, Ž.* ; Mainelis, G.* ; Ovadnevaitė, J.* ; Kecorius, S. ; Plauškaitė-Šukienė, K.* ; Byčenkiene, S.*

Indoor-outdoor relationship of submicron particulate matter in mechanically ventilated building: Chemical composition, sources and infiltration factor.

Build. Environ. 222:109429 (2022)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
To evaluate the impact of outdoor particulate pollution on indoor air quality, the chemical composition and sources of submicron aerosol particles (PM1) were studied indoors and outdoors. Measurements were carried out during the heating season from October 15, 2020, to February 8, 2021, at the Center for Physical Sciences and Technologies in Vilnius, Lithuania. Online measurements of PM1 chemical composition were performed using an Aerosol Chemical Speciation Monitor (ACSM (organics, sulfate, and nitrate)) and an Aethalometer (equivalent black carbon, BC). In parallel with the online measurements, filter-based elemental composition and 14C analysis of PM1 were performed using a Particle-Induced broad-beam X-ray Emission (PIXE) and a Single Stage Accelerated Mass Spectrometer (SSAMS), respectively. The source apportionment results showed a dominant contribution of biomass burning to the total carbonaceous aerosol particles, including primary (30%) and secondary (40%) fractions. According to the enrichment factors, the main source of trace elements was road dust resuspension (30%), while anthropogenic emissions accounted for only 13% of trace elements. The infiltration factor (Finf) of all studied PM1 constituents was low (Finf∼0.03). This result indicates that the three-stage building filter system (G4-F7-F9) provides high protection against particle pollution of different origins and significantly reduces indoor exposure to PM1. The changed chemical composition of indoor PM1 can be attributed to species-specific evaporation and some minor indoor sources.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Indoor Air Quality ; Infiltration Factor ; Particle Chemical Composition ; Pm 1 ; Source Apportionment ; Trace Elements
Language english
Publication Year 2022
HGF-reported in Year 2022
ISSN (print) / ISBN 0360-1323
e-ISSN 1873-684X
Journal Building and Environment
Quellenangaben Volume: 222, Issue: , Pages: , Article Number: 109429 Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed
Institute(s) Institute of Epidemiology (EPI)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Genetics and Epidemiology
PSP Element(s) G-504000-004
DOI 10.1016/j.buildenv.2022.109429
WOS ID WOS:000897531300005
Scopus ID 85135307273
Erfassungsdatum 2022-11-08
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