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Capturing particulate and gas-phase oxidation products of indoor chemistry.

Authors
Wells-JR
Source
Proceedings of Indoor Air '11, The 12th International Conference on Indoor Air Quality and Climate, June 5-10, 2011, Austin, Texas. Santa Cruz, CA: International Society of Indoor Air Quality and Climate (ISIAQ), 2011 Jun; 1:289-290
NIOSHTIC No.
20043037
Abstract
The many terpenes in consumer products (such as cleaners) can oxidize in the gas phase or on surfaces to form organic compounds that could possibly lead to health effects (Carslaw, 2009). Reactions initiated by species such as ozone, hydroxyl radical (OH.) and nitrate radical (NO3.) transform terpenes into oxygenated organic compounds such as aldehydes, ketones, dicarbonyls, and organic acids (Weschler, 2001). Thus, there is an established need to accurately understand terpene oxidation. The efficient collection and characterization of reaction product species, either gas phase or particle phase, are critical to verify proposed reaction mechanisms, improve indoor chemistry models, and ultimately reduce indoor environment exposures. Chemical derivatization coupled with gas chromatography/mass spectrometry (GC/MS) was used to identify carboxylic acid and carbonyl reaction products from the ozonolysis of ..pinene, limonene and ..terpineol. These three terpenes play significant roles in both the outdoor and indoor environments and an improved understanding of their reaction chemistry would benefit research in global climate and indoor air quality.
Keywords
Terpene-compounds; Gases; Organic-compounds; Exposure-levels; Risk-factors; Vapors; Hazards; Indoor-environmental-quality; Environmental-exposure; Environmental-health; Chemical-properties; Gas-chromatography; Mass-spectrometry; Carboxylic-acids; Air-quality; Sampling; Author Keywords: carboxylic acids; carbonyl compounds; ozone; terpenes; sampling
Publication Date
20110601
Document Type
Conference/Symposia Proceedings
Email Address
ozw0@cdc.gov
Fiscal Year
2011
NTIS Accession No.
NTIS Price
ISBN No.
9781627482721
NIOSH Division
HELD
Source Name
Proceedings of Indoor Air '11, The 12th International Conference on Indoor Air Quality and Climate, June 5-10, 2011, Austin, Texas
State
WV; TX; CA
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