Sorptive Interactions between VOCs and Indoor Materials
This study was carried out using various materials (carpet, gypsum board, upholstery, vinyl and wood flooring, acoustic tiles, and fruit) that were exposed to eight gaseous volatile organic compounds (VOCs) (isopropanol, MTBE, cyclohexane, toluene, ethylbenzene, tetrachloroethene, 1,2-dichlorobenzen...
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Published in | Indoor air Vol. 11; no. 4; pp. 246 - 256 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Copenhagen
Munksgaard International Publishers
01.12.2001
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Subjects | |
Online Access | Get full text |
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Summary: | This study was carried out using various materials (carpet, gypsum board, upholstery, vinyl and wood flooring, acoustic tiles, and fruit) that were exposed to eight gaseous volatile organic compounds (VOCs) (isopropanol, MTBE, cyclohexane, toluene, ethylbenzene, tetrachloroethene, 1,2-dichlorobenzene, and 1,2,4-trichlorobenzene) in electro-polished stainless-steel chambers. Dynamic responses in VOC concentrations were used to determine linear adsorption and desorption rate coefficients and equilibrium partition coefficients. A linear adsorption/desorption model was used to effectively describe the interactions between VOCs and indoor surface materials for short-term source events (10 h). Relationships between sorption parameters and chemical vapor pressure and the octanol-air partition coefficient were observed. Carpet was identified as the most significant sorptive sink for non-polar VOCs. Virgin gypsum board was observed to be a significant sink for highly polar VOCs. Sorptive interactions between non-polar VOCs and indoor materials were not affected by variations in relative humidity. However, increases in relative humidity were observed to increase the degree of sorption of isopropanol to carpet. |
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Bibliography: | ArticleID:INA110406 ark:/67375/WNG-8GJFXRV7-8 istex:F53DA68FF12CB7DAA96CEA85AC900887089140EF corsi@mail.texas.edu Author to whom correspondence should be addressed at the University of Texas at Austin, Texas Institute for the Indoor Environment, Austin, TX 78758, USA, Fax: +1 512 471 1720, e‐mail |
ISSN: | 0905-6947 1600-0668 |
DOI: | 10.1034/j.1600-0668.2001.110406.x |