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Atmos Environ (1994)

Title:		"Volatile organic compound conversion by ozone, hydroxyl radicals, and nitrate radicals in residential indoor air: Magnitudes and impacts of oxidant sources"
Author(s):		Waring MS; Wells JR;
Address:		"Drexel University, Department of Civil, Architectural and Environmental Engineering, 3141 Chestnut St., Philadelphia, PA 19104, United States. Exposure Assessment Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, United States"
Journal Title:		Atmos Environ (1994)
Year:		2015
Volume:		106
Issue:
Page Number:		382 - 391
DOI:		10.1016/j.atmosenv.2014.06.062
ISSN/ISBN:		1352-2310 (Print) 1352-2310 (Linking)
Abstract:		"Indoor chemistry may be initiated by reactions of ozone (O(3)), the hydroxyl radical (OH), or the nitrate radical (NO(3)) with volatile organic compounds (VOC). The principal indoor source of O(3) is air exchange, while OH and NO(3) formation are considered as primarily from O(3) reactions with alkenes and nitrogen dioxide (NO(2)), respectively. Herein, we used time-averaged models for residences to predict O(3), OH, and NO(3) concentrations and their impacts on conversion of typical residential VOC profiles, within a Monte Carlo framework that varied inputs probabilistically. We accounted for established oxidant sources, as well as explored the importance of two newly realized indoor sources: (i) the photolysis of nitrous acid (HONO) indoors to generate OH and (ii) the reaction of stabilized Criegee intermediates (SCI) with NO(2) to generate NO(3). We found total VOC conversion to be dominated by reactions both with O(3), which almost solely reacted with d-limonene, and also with OH, which reacted with d-limonene, other terpenes, alcohols, aldehydes, and aromatics. VOC oxidation rates increased with air exchange, outdoor O(3), NO(2) and d-limonene sources, and indoor photolysis rates; and they decreased with O(3) deposition and nitric oxide (NO) sources. Photolysis was a strong OH formation mechanism for high NO, NO(2), and HONO settings, but SCI/NO(2) reactions weakly generated NO(3) except for only a few cases"
Keywords:		Indoor chemistry Monte Carlo modeling Photolysis Terpenes VOC oxidation;
Notes:		"PubMed-not-MEDLINEWaring, Michael S Wells, J Raymond eng CC999999/Intramural CDC HHS/ England 2016/02/09 Atmos Environ (1994). 2015 Apr; 106:382-391. doi: 10.1016/j.atmosenv.2014.06.062"