Determination of Ozone Removal Rates by Selected Building Products Using the FLEC Emission Cell
- 18 May 2001
- journal article
- research article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 35 (12) , 2548-2553
- https://doi.org/10.1021/es000284n
Abstract
Ozone removal by 16 aged (older than 1−120 months) but unused building products or materials was studied in a test system that included the field and laboratory emission cell (FLEC). The ozone removal was studied at 50 ± 1 ppb ozone, a relative humidity of 50 ± 5%, a temperature of 21 ± 2 °C, and an air flow rate of 900 ± 10 mL min-1 through the FLEC (air velocity ca. 3 cm s-1). The ozone removal increased rapidly during the first 1−2 min and either remained at a constant level or decreased asymptotically to reach a steady state-like value. The ozone removal profiles for a given material showed good repeatability during replicate experiments. Ozone deposition velocities for the building products were calculated to be between 0.0007 cm s-1 (lacquered ash) and 0.8 cm s-1 (unpainted gypsum board).Keywords
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