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2895211 
Technical Report 
Characterization of Aerosols from JP-8 Fuels in Jet Engine Emissions 
Schumacher, PM 
1998 
NTIS/02922980_a 
GRA and I 
GRA and I 
The emissions of the engine of a C-130E aircraft were studied under low ambient temperature ((caret) 20 deg F) start-up conditions at Minneapolis AFS, MN in January 97. Samples of the engine emissions were collected using SUMMA(Registered) canisters, PS-1 medium volume samplers, and cascade impactors. The collected engine emissions were chemically analyzed by GC/MS 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 mg/m3, 4.7 mg/m3, and 1.5 mg/m3, 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 ng/m3, 120 ng/m3, and 90 ng/m3, respectively. Over 86 percent of the nonvolatile B2 PAH was found in the respirable size fraction of the aerosol phase.