Particle number concentrations in office spaces around Europe

Laura Salo, Ville Silvonen, Tuomas Raunima, Michal Vojtisek-Lom, Jakub Ondracek, Jan Topinka, Roel P.F. Schins, Teemu Lepistö, Henna Lintusaari, Sanna Saarikoski, Luis M.F. Barreira, Jussi Hoivala, Lassi Markkula, Ilpo Kulmala, Juha Vinha, Panu Karjalainen, Topi Rönkkö

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

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.

Original languageEnglish
Title of host publication18th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2024
PublisherInternational Society of Indoor Air Quality and Climate (ISIAQ)
Pages207-214
Volume1
ISBN (Electronic)9798331306816
Publication statusPublished - 2024
Publication typeA4 Article in conference proceedings
EventInternational Conference on Indoor Air Quality and Climate: Sustaining the Indoor Air Revolution: Raise Your Impact - Honolulu, United States
Duration: 7 Jul 202411 Jul 2024
Conference number: 18
https://indoorair2024.org/

Conference

ConferenceInternational Conference on Indoor Air Quality and Climate
Abbreviated titleINDOOR AIR 2024
Country/TerritoryUnited States
CityHonolulu
Period7/07/2411/07/24
Internet address

Keywords

  • ELPI+
  • fine particulate matter
  • I/O ratio
  • infiltration factor
  • ultrafine particles

Publication forum classification

  • Publication forum level 0

ASJC Scopus subject areas

  • Pollution

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