Evaluation of the effectiveness of several air cleaners for reducing the hazard from indoor radon progeny

In studies conducted in the early 1980s, it was suggested that the use of room-type air cleaners were relatively ineffective in reducing the hazards associated with the presence of radon decay products in indoor air. Some studies suggested that air cleaning could actually increase the dose delivered...

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Bibliographic Details
Published in:Aerosol science and technology 1993-01, Vol.19 (2), p.268-278
Main Authors: Hopke, P K, Montassier, N, Wasiolek, P
Format: Article
Language:English
Online Access:Get full text
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Summary:In studies conducted in the early 1980s, it was suggested that the use of room-type air cleaners were relatively ineffective in reducing the hazards associated with the presence of radon decay products in indoor air. Some studies suggested that air cleaning could actually increase the dose delivered by the decay products by shifting the activity-weighted particle size distribution to smaller sizes to the point where dose increase even though exposure decreased. A recently development automated, semicontinuous instrument now permits the direct measurement of activity-weighted size distributions in occupied homes so that the exposure to those occupants can be directly determined and the effect of the air cleaners on dose be estimated. Three different types of air cleaners were tested in this study; an electrostatic air cleaner (EAC), an ion generator/fan system (IG/F), and a filtration unit that was operated at two different fan speeds (LO-FIL and HI-FIL).
ISSN:0278-6826