Diffusion studies of VOC mixtures in a building material
| Autor: | R. Meininghaus, E. Uhde |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Gypsum Mass flow Public Health Environmental and Occupational Health Analytical chemistry Building material Building and Construction engineering.material Boiling point Adsorption chemistry Environmental chemistry Desorption engineering Polar Volatile organic compound |
| Zdroj: | Indoor Air. 12:215-222 |
| ISSN: | 0905-6947 |
| DOI: | 10.1034/j.1600-0668.2002.01131.x |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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