Porous silica spheres as indoor air pollutant scavengers

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Delaney, Paul W.
Healy, Robert M.
Hanrahan, John P.
Gibson, Lorraine T.
Wenger, John C.
Morris, Michael A.
Holmes, Justin D.
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Royal Society of Chemistry (RSC)
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Porous silica spheres were investigated for their effectiveness in removing typical indoor air pollutants, such as aromatic and carbonyl-containing volatile organic compounds (VOCs), and compared to the commercially available polymer styrene–divinylbenzene (XAD-4). The silica spheres and the XAD-4 resin were coated on denuder sampling devices and their adsorption efficiencies for VOCs evaluated using an indoor air simulation chamber. Real indoor sampling was also undertaken to evaluate the affinity of the silica adsorbents for a variety of indoor VOCs. The silica sphere adsorbents were found to have a high affinity for polar carbonyls and found to be more efficient than the XAD-4 resin at adsorbing carbonyls in an indoor environment.
Air pollutants , Air pollution, indoor , Organic chemicals , Porosity , Silicon dioxide , Adsorption , Air sampling , Ambient air , Mass fragmentography , Acetaldehyde , Acetone , Adsorbent , Aromatic hydrocarbon , Butyraldehyde , Carbonyl derivative , Divinylbenzene , Hexanal , Methylglyoxal , Silicon dioxide , Styrene , Volatile organic compound
Delaney, P., Healy, R. M., Hanrahan, J. P., Gibson, L. T., Wenger, J. C., Morris, M. A. and Holmes, J. D. (2010) 'Porous silica spheres as indoor air pollutant scavengers', Journal of Environmental Monitoring, 12(12), pp. 2244-2251. doi: 10.1039/C0EM00226G
© The Royal Society of Chemistry 2010