Simulation of Secondary Organic Research Needs
نویسنده
چکیده
awma.org Copyright 2012 Air & Waste Management Association The organic fraction of fine particulate matter (PM2.5) can comprise a large fraction of total concentrations of PM across the United States.1 Typically, organic aerosol (OA) or organic particulate matter (OPM) has been viewed as primary and secondary in nature, referring to material that is directly emitted to the atmosphere or PM that forms through atmospheric processing. The conceptual framework for secondary organic aerosol (SOA) for many years was based on the oxidation of volatile organic compounds (VOCs) to form less-volatile products that would partition onto the existing particles.2,3 Parent VOCs considered large enough to form condensable oxidation products were typically those with eight or more carbon molecules, such as toluene, xylene, monoterpenes, and sesquiterpenes. Similarly, the conceptual framework for primary organic aerosols (POA) was based on the premise that these particles participated in SOA formation process by providing a preexisting Simulation of Secondary Organic Research Needs
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