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Environ Sci Technol

Title:		A New Approach to Characterizing the Partitioning of Volatile Organic Compounds to Cotton Fabric
Author(s):		Yu J; Wania F; Abbatt JPD;
Address:		"Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada. Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario M1C 1A4, Canada"
Journal Title:		Environ Sci Technol
Year:		2022
Volume:		20220301
Issue:		6
Page Number:		3365 - 3374
DOI:		10.1021/acs.est.1c08239
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Chemical partitioning to surfaces can influence human exposure by various pathways, resulting in adverse health consequences. Clothing can act as a source, a barrier, or a transient reservoir for chemicals that can affect dermal and inhalation exposure rates. A few clothing-mediated exposure studies have characterized the accumulation of a select number of semi-volatile organic compounds (SVOCs), but systematic studies on the partitioning behavior for classes of volatile organic compounds (VOCs) and SVOCs are lacking. Here, the cloth-air equilibrium partition ratios (K(CA)) for carbonyl, carboxylic acid, and aromatic VOC homologous series were characterized for cellulose-based cotton fabric, using timed exposures in a real indoor setting followed by online thermal desorption and nontargeted mass spectrometric analysis. The analyzed VOCs exhibit rapid equilibration within a day. Homologous series generally show linear correlations of the logarithm of K(CA) with carbon number and the logarithms of the VOC vapor pressure and octanol-air equilibrium partition ratio (K(OA)). When expressed as a volume-normalized partition ratio, log K(CA_V) values are in a range of 5-8, similar to the values for previously measured SVOCs which have lower volatility. When expressed as surface area-normalized adsorption constants, K(CA_S) values suggest that equilibration corresponds to a saturated surface coverage of adsorbed species. Aqueous solvation may occur for the most water-soluble species such as formic and acetic acids. Overall, this new experimental approach facilitates VOC partitioning studies relevant to environmental exposure"
Keywords:		"*Air Pollutants/analysis *Air Pollution, Indoor/analysis Environmental Exposure/analysis Humans Octanols Textiles Vapor Pressure *Volatile Organic Compounds adsorption chemical exposure cotton fabric environmental partitioning fabric-air partitioning;"
Notes:		"MedlineYu, Jie Wania, Frank Abbatt, Jonathan P D eng Research Support, Non-U.S. Gov't 2022/03/02 Environ Sci Technol. 2022 Mar 15; 56(6):3365-3374. doi: 10.1021/acs.est.1c08239. Epub 2022 Mar 1"