Characterization of Aerosols from JP-8 Fuels in Jet Engine Emissions
Final rept. Jun 1997-May 1998
BATTELLE COLUMBUS OH
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The emissions of the engine of a C-130E aircraft were studied under low ambient temperature 20 deg F start-up conditions at Minneapolis AFS, MN in January 97. Samples of the engine emissions were collected using SUMMARegistered canisters, PS-1 medium volume samplers, and cascade impactors. The collected engine emissions were chemically analyzed by GCMS to determine the airborne concentration of volatile organic compounds VOC, unburned JP-8 fuel, and polynuclear aromatic hydrocarbons PAH. The highest concentration of unburned W-8 fuel observed directly behind the operating engine, in the loading corridor behind the aircraft, and inside the aircraft was 14.2 mgm3, 4.7 mgm3, and 1.5 mgm3, respectively. Over 90 percent of the unburned JP-8 fuel was found in the vapor phase at 20 deg F. The highest concentration of B2 PAH observed directly behind the operating engine, in the loading corridor behind the aircraft, and inside the aircraft was 390 ngm3, 120 ngm3, and 90 ngm3, respectively. Over 86 percent of the nonvolatile B2 PAH was found in the respirable size fraction of the aerosol phase.
- Air Pollution and Control