title: Characterization of exhaust particles from military vehicles fueled with diesel, gasoline, and JP-8.
abstract: Diluted exhaust from selected military aircraft ground-support equipment (AGE) was analyzed for particulate mass, elemental carbon (EC) and organic carbon (OC), SO4(2-), and size distributions. The experiments occurred at idle and load conditions and utilized a chassis dynamometer. The selected AGE vehicles operated on gasoline, diesel, and JP-8. These military vehicles exhibited concentrations, size distributions, and emission factors in the same range as those reported for nonmilitary vehicles. The diesel and JP-8 emission rates for PM ranged from 0.092 to 1.1 g/kg fuel. The EC contributed less and the OC contributed more to the particulate mass than reported in recent studies of vehicle emissions. Overall, the particle size distribution varied significantly with engine condition, with the number of accumulation mode particles and the count median diameter (CMD) increasing as engine load increased. The SO4(2-) analyses showed that the distribution of SO4(2-) mass mirrored the distribution of particle mass.
authors.affiliation: Department of Chemical and Fuels Engineering, University of Utah, Salt Lake City, Utah, USA. kelly@eng.utah.edu
authors.forename: Kerry E
authors.initials: KE
authors.lastname: Kelly
authors.forename: David A
authors.initials: DA
authors.lastname: Wagner
authors.forename: JoAnn S
authors.initials: JS
authors.lastname: Lighty
authors.forename: Adel F
authors.initials: AF
authors.lastname: Sarofim
authors.forename: C Fred
authors.initials: CF
authors.lastname: Rogers
authors.forename: John
authors.initials: J
authors.lastname: Sagebiel
authors.forename: Barbara
authors.initials: B
authors.lastname: Zielinska
authors.forename: W Pat
authors.initials: WP
authors.lastname: Arnott
authors.forename: Glenn
authors.initials: G
authors.lastname: Palmer
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002273:Carcinogens / Q000737:chemistry*; D004738:Engineering; D004784:Environmental Monitoring; D005579:Fossil Fuels; D005742:Gasoline; D006838:Hydrocarbons / Q000737:chemistry*; D018986:Motor Vehicles; D010316:Particle Size; D010578:Petroleum; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D002273:Carcinogens; D005579:Fossil Fuels; D005742:Gasoline; D006838:Hydrocarbons; C098607:JP8 aviation fuel; D010578:Petroleum; D001335:Vehicle Emissions