%0 Conference Paper
%A Brett C Singer
%A Alfred T Hodgson
%A Toshifumi Hotchi
%A Katherine Y Ming
%A Richard G Sextro
%A Emily E Wood
%A Nancy J Brown
%B Proceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005
%C Beijing, China
%D 2005
%G eng
%I Tsinghua University Press
%P 2314-2319
%T Sorption of organic gases in residential bedrooms and bathrooms
%V 2(9)
%1 <p>3, 4</p>
%2 LBNL-56787
%X <p>Experiments were conducted to characterize organic gas sorption in residential bedrooms (n=4), bathrooms (n=2), and a furnished test chamber. Rooms were studied "as-is" with material surfaces and furnishings unaltered. Surface materials were characterized and areas quantified. Experiments included rapid volatilization of a volatile organic compound (VOC) mixture with the room closed and sealed for a 5-h Adsorb phase, followed by 30-min Flush and 2-h closed-room Desorb phases. The mixture included n-alkanes, aromatics, glycol ethers, 2-ethyl-1-hexanol, dichlorobenzene, and organophosphorus compounds. Measured gas-phase concentrations were fit to three variations of a mathematical model that considers sorption occurring at one surface sink and one potential embedded sink. The 2-parameter sink model tracked measurements for most compounds, but improved fits were obtained for some VOCs with a 3-parameter sink-diffusion or a 4-parameter two-sink model. Sorptive partitioning and initial adsorption rates increased with decreasing vapour pressure within each chemical class.</p>