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Ventilation filter efficiency for particles and grass pollen allergens
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för inomhusmiljö. (Indoor environment)ORCID iD: 0000-0002-0337-8004
University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för naturvetenskap.
Stockholms Universitet, ITM.
Timanställd vid HiG.
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2009 (English)In: Proceedings of the 9th International Healthy Buildings Conference and Exhibition: HEALTHY BUILDINGS 2009, Paper No: 460. / [ed] Santanam, S., Bogucz, E.A., Peters, C., Benson, T., 2009Conference paper, Published paper (Refereed)
Abstract [en]

In an experimental study, commonly used ventilation fine filters were tested regarding their efficiency in collecting airborne particles and grass pollen allergens from outdoor air. Grass pollen allergen and particle number concentrations were measured before and after the filters, enabling collection efficiency calculations. Simultaneously, the size distribution of grass pollen allergens was measured in outdoor air using a cascade impactor. The study confirms previous indications that pollen allergens occur in the outdoor air as particles much smaller than pollen grains, and can penetrate ventilation filters to a larger extent than might be expected. The initially high collection efficiency of synthetic, electrostatically charged filters declined significantly with time of use (dust load), whereas glass fiber filters showed steady performance. A slight tendency for pollen allergenic matter to penetrate ventilation filters more than other airborne particles was noted, but no difference in the response to electrostatic charge of filters could be seen.

Place, publisher, year, edition, pages
2009.
Keyword [en]
Pollen allergens, Airborne Particles, Ventilation Filters, Filtration
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hig:diva-5328OAI: oai:DiVA.org:hig-5328DiVA: diva2:234302
Conference
9th International Healthy Buildings Conference and Exhibition, Syracuse, NY, USA, 13–19 September 2009
Available from: 2009-09-07 Created: 2009-09-07 Last updated: 2015-10-16Bibliographically approved

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CiteExportLink to record
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Citation style
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