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Chemosphere

Title:		Plant leaves as indoor air passive samplers for volatile organic compounds (VOCs)
Author(s):		Wetzel TA; Doucette WJ;
Address:		"Utah Department of Air Quality, Salt Lake City, UT 84116, USA. Electronic address: twetzel@utah.gov. Utah Water Research Laboratory, Utah State University, 8200 Old Main Hill, Logan, UT 84322, USA. Electronic address: william.doucette@usu.edu"
Journal Title:		Chemosphere
Year:		2015
Volume:		20141127
Issue:
Page Number:		32 - 37
DOI:		10.1016/j.chemosphere.2014.10.065
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"Volatile organic compounds (VOCs) enter indoor environments through internal and external sources. Indoor air concentrations of VOCs vary greatly but are generally higher than outdoors. Plants have been promoted as indoor air purifiers for decades, but reports of their effectiveness differ. However, while air-purifying applications may be questionable, the waxy cuticle coating on leaves may provide a simple, cost-effective approach to sampling indoor air for VOCs. To investigate the potential use of plants as indoor air VOC samplers, a static headspace approach was used to examine the relationship between leaf and air concentrations, leaf lipid contents and octanol-air partition coefficients (Koa) for six VOCs and four plant species. The relationship between leaf and air concentrations was further examined in an actual residence after the introduction of several chlorinated VOC emission sources. Leaf-air concentration factors (LACFs), calculated from linear regressions of the laboratory headspace data, were found to increase as the solvent extractable leaf lipid content and Koa value of the VOC increased. In the studies conducted in the residence, leaf concentrations paralleled the changing air concentrations, indicating a relatively rapid air to leaf VOC exchange. Overall, the data from the laboratory and residential studies illustrate the potential for plant leaves to be used as cost effective, real-time indoor air VOC samplers"
Keywords:		"Air Pollutants/*analysis Air Pollution, Indoor/analysis Environmental Monitoring/*methods Linear Models Magnoliopsida/chemistry Plant Leaves/*chemistry Volatile Organic Compounds/*analysis Chlorinated solvents Indoor air contamination Indoor air quality L;"
Notes:		"MedlineWetzel, Todd A Doucette, William J eng Research Support, Non-U.S. Gov't England 2014/12/02 Chemosphere. 2015 Mar; 122:32-37. doi: 10.1016/j.chemosphere.2014.10.065. Epub 2014 Nov 27"