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Characterization of Gas and Particle Emissions from Laboratory Burns of Peat
Citation:
Black, R., B. Gullett, I. George, J. Aurell, A. Holder, M. Hays, Chris Geron, AND D. Tabor. Characterization of Gas and Particle Emissions from Laboratory Burns of Peat. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 132:49-57, (2016).
Impact/Purpose:
This paper reports on emission factors from peat combustion/smoldering. This is a poorly characterized but significant source of emissions. Little data on peat fires have been published in the literature.
Description:
Peat cores collected from two locations in eastern North Carolina (NC, USA) were burned in a laboratory facility to characterize emissions during simulated field combustion. Particle and gas samples were analyzed to quantify emission factors for particulate matter (PM2.5), organic carbon (OC), elemental carbon, light absorbing carbon, absorption Angstrom exponent, metals, polycyclic aromatic hydrocarbons (PAHs), and polychlorinated dibenzodioxins/dibenzofurans (PCDDs/PCDFs). CO from the smoldering burns, up to 7 h in duration, represented approximately 40% of the carbonaceous gases. Emission factors for black carbon (BC) and light absorbing carbon (UVPM) were considerably lower than those found for forest litter burns. Emission factors for PCDDs/PCDFs were several times higher than published values for forest fuels, at 6-9 ng toxic equivalents (TEQ)/kg carbon burned (Cb). Total PAH concentrations of > 12 mg/kg were higher than published data from biomass burns, but roughly the same in terms of toxicity. Application of these emission factors to the noteworthy 2008 “Evans Road” fire in NC indicates that PM2.5 and PCDD/PCDF emissions from this fire may have been 4 -6% of the annual US inventory and 5% of the annual OC amount.
