Capturing particulate and gas-phase oxidation products of indoor chemistry.
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
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.
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
Proceedings of Indoor Air '11, The 12th International Conference on Indoor Air Quality and Climate, June 5-10, 2011, Austin, Texas