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Ventilation filter efficiency for birch pollen allergens: experimental data from one pollen season
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering. (Indoor environment)ORCID iD: 0000-0002-0337-8004
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
Swedish Museum of Natural History, Laboratory of Palynology.
Swedish Museum of Natural History, Laboratory of Palynology.
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2011 (English)In: Proceedings from Roomvent 2011 / [ed] Hans Martin Mathisen, Trondheim: Tapir Akademisk Forlag , 2011Conference paper, Published paper (Refereed)
Abstract [en]

In an experimental study, ventilation filters of high quality (F7 & F9) were tested regarding their efficiency in collecting birch pollen allergens in outdoor air. The birch pollen grain concentration in outdoor air was measured at the same time as pollen allergen and particle number concentrations were measured before and after the tested ventilation filters, thus enabling collection efficiency calculations. Simultaneously, the size distribution of birch pollen allergens was measured in outdoor air using a cascade impactor. The study confirms previous indications that pollen allergens may occur in outdoor air in particles much smaller than pollen grains, and can penetrate ventilation filters to a larger extent than might be expected. This entails that although the high quality filters collect most of outdoor air pollen allergens, a significant exposure dose to these allergens can occur in the indoor environment, especially when considering the fact most people stay much more indoors than outdoors. The study also confirms previous similar indications attained with grass pollen allergens, in that the allergenic particles tend to penetrate ventilation filters to a greater extent than other airborne particles.

Place, publisher, year, edition, pages
Trondheim: Tapir Akademisk Forlag , 2011.
Keyword [en]
Pollen grains, pollen allergens, filters, filtration, particles
National Category
Civil Engineering Other Industrial Biotechnology
Identifiers
URN: urn:nbn:se:hig:diva-8885ISBN: 978-82-519-2812-0 (print)OAI: oai:DiVA.org:hig-8885DiVA: diva2:414134
Conference
Roomvent 2011 – 12th International conference on air distribution in rooms. Trondheim, Norway
Note
Paper No. 246Available from: 2011-05-02 Created: 2011-05-02 Last updated: 2015-10-16Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf