Sorption of organic gases in residential bedrooms and bathrooms

Sorption of organic gases in residential bedrooms and bathrooms

TitleSorption of organic gases in residential bedrooms and bathrooms
Publication TypeConference Paper
Year of Publication2005
AuthorsBrett C Singer, Alfred T Hodgson, Toshifumi Hotchi, Katherine Y Ming, Richard G Sextro, Emily E Wood, Nancy J Brown
Conference NameProceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005
PublisherTsinghua University Press
Conference LocationBeijing, China
Abstract

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.

LBNL Report Number

LBNL-56787