0605212 - ÚCHP 2025 US eng C - Konferenční příspěvek (zahraniční konf.)
Salo, L. - Silvonen, V. - Raunima, T. - Vojtíšek-Lom, M. - Ondráček, Jakub - Topinka, Jan - Schins, R.P.F. - Lepistö, T. - Lintusaari, H. - Saarikoski, S. - Barreira, L.M.F. - Hoivala, J. - Markkula, L. - Kulmala, I. - Vinha, J. - Karjalainen, P. - Rönkkö, T.
Particle number concentrations in office spaces around Europe.
Conference Program and Proceedings. Virginia: International Society of Indoor Air Quality and Climate, 2024.
[International Conference on Indoor Air Quality and Climate, INDOOR AIR 2024 /18./. Honolulu (US), 07.07.2024-11.07.2024]
Institucionální podpora: RVO:67985858 ; RVO:68378041
Klíčová slova: fine particulate matter * I/O ratio * infiltration factor * ultrafine particles
Obor OECD: Meteorology and atmospheric sciences; Meteorology and atmospheric sciences (UEM-P)

In this work, we investigated indoor air particle number concentrations and their size distributions in four office spaces in Europe. We used an Electrical low-pressure impactor (ELPI+) to enable high time-resolution, as well as a wide size range of particles (here 16 nm to 1 µm). In addition to indoor air concentrations, we report the concurrent outdoor concentrations and their relationship to one another. Infiltration factors ranged from 0.22 to 0.6 and the contribution of indoor sources was from 6 % to 51 %. Mechanically ventilated buildings had less infiltration. The number concentrations in two offices were always above the low threshold value given by the World Health Organization.
Trvalý link: https://hdl.handle.net/11104/0362755