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Indoor Air


Title:Diffusion studies of VOC mixtures in a building material
Author(s):Meininghaus R; Uhde E;
Address:"Air Quality Unit, Environment Institute, Joint Research Center, Italy"
Journal Title:Indoor Air
Year:2002
Volume:12
Issue:4
Page Number:215 - 222
DOI: 10.1034/j.1600-0668.2002.01131.x
ISSN/ISBN:0905-6947 (Print) 0905-6947 (Linking)
Abstract:"Volatile organic compound (VOC) adsorption by indoor materials will reduce peak concentrations, and subsequent desorption will prolong the presence of a compound indoors. Diffusion within materials plays an important role in this context. The purpose of this paper is to present two experimental set-ups to study VOC diffusion, and to show corresponding experimental results. The Field and Laboratory Emission Cell (FLEC) is in both cases an integral part of the set-up. The mass flow of VOC mixtures across gypsum board is studied. Diffusion of less polar VOCs in gypsum board can be fast (diffusion coefficients of 0.001-0.003 m2/h). Diffusion coefficients of chlorinated compounds are correlated with boiling points and molecular areas. Different compounds show similar diffusion properties"
Keywords:"Adsorption Air Movements Air Pollution, Indoor/*analysis *Construction Materials Diffusion Organic Chemicals/analysis Volatilization;"
Notes:"MedlineMeininghaus, R Uhde, E eng Research Support, Non-U.S. Gov't England 2003/01/21 Indoor Air. 2002 Dec; 12(4):215-22. doi: 10.1034/j.1600-0668.2002.01131.x"

 
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