Enhancing contaminant control to mitigate aeroallergies

Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology
A H Frey

Abstract

Modern construction techniques such as sealing buildings and reducing air exchange rates to conserve energy often increase indoor air contaminant concentrations, a problem for people with asthma and aeroallergies. Further, a large proportion of the contaminants that are found in indoor air do not reach the filters because the motion of particulates less than about 3 microns in size, 99% of all particulates, is determined more by the normal electrical forces in a room than by the air currents. To determine whether the natural process of aerosol coagulation, which increases particle size, can be speeded-up, thereby enhancing the effectiveness of air currents in returning contaminants to the filters and improving contamination control. A set of four experiments using various methods involving particulate and gaseous contaminants are presented. Statistically significant differences in room contaminant load were found in the various experiments as a function of the treatment used. The effectiveness of filters can be significantly enhanced and the concentration of contaminants in indoor air can be significantly reduced in a straight-forward direct way. The physics underlying the phenomena is described. The implications for allergy an...Continue Reading

References

Dec 1, 1987·The American Review of Respiratory Disease·J M SametJ D Spengler
May 1, 1986·Bulletin of Environmental Contamination and Toxicology·A H Frey
Dec 1, 1983·Bulletin of Environmental Contamination and Toxicology·A H Frey
Mar 25, 1993·The New England Journal of Medicine·R MenziesR Tamblyn

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Citations

Feb 9, 1999·The Journal of Allergy and Clinical Immunology·E Tovey, G Marks
Mar 27, 2004·Experimental Biology and Medicine·Linda J Utrup, Allan H Frey

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