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Ventilation filter efficiency for birch pollen allergens: experimental data from one pollen season
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Byggvetenskap - installationsteknik. (Indoor environment)ORCID-id: 0000-0002-0337-8004
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Kemi.
Swedish Museum of Natural History, Laboratory of Palynology.
Swedish Museum of Natural History, Laboratory of Palynology.
Vise andre og tillknytning
2011 (engelsk)Inngår i: Proceedings from Roomvent 2011 / [ed] Hans Martin Mathisen, Trondheim: Tapir Akademisk Forlag , 2011Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
Trondheim: Tapir Akademisk Forlag , 2011.
Emneord [en]
Pollen grains, pollen allergens, filters, filtration, particles
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-8885ISBN: 978-82-519-2812-0 (tryckt)OAI: oai:DiVA.org:hig-8885DiVA, id: diva2:414134
Konferanse
Roomvent 2011 – 12th International conference on air distribution in rooms. Trondheim, Norway
Merknad

Paper No. 246

Tilgjengelig fra: 2011-05-02 Laget: 2011-05-02 Sist oppdatert: 2018-12-03bibliografisk kontrollert

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