Aerosols
; Air quality
; Ammonia
; Fuels
; Gasoline
; Liquids
; Nitrates
; Nitrogen oxides
; Vehicles
; Ammonium nitrate
; Metropolitan regions
; Passenger vehicles
; Photochemical oxidation
; Photochemical processing
; Primary emissions
; Secondary production
; Three way catalysts
; Fleet operations
; ammonium nitrate
; diesel fuel
; gasoline
; liquefied petroleum gas
; nitrogen oxide
; aerosol formation
; air quality
; ammonia
; ammonium nitrate
; catalyst
; diesel
; hydrocarbon
; metropolitan area
; nitrogen oxides
; nitrous oxide
; oxidation
; photochemistry
; traffic emission
; air pollution control
; air quality
; air sampling
; Article
; atmospheric dispersion
; chemical reaction
; exhaust gas
; photooxidation
; priority journal
; South Korea
; Seoul [South Korea]
; South Korea
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
A vehicle fleet representative of passenger vehicles driven in the Seoul Metropolitan Region was investigated for primary emissions and secondary chemistry. Exhaust was photochemically oxidized in a flow reactor to determine the ammonium nitrate (NH4NO3) aerosol formation potential from vehicles of gasoline, diesel and liquid petroleum gasoline (LPG) fuel types. Secondary formation of aerosol NH4NO3, was larger than primary emissions for all vehicle fuel types except diesel, for which negligible secondary NH4NO3production was observed. Although diesel vehicles emitted more primary nitrogen oxides than other vehicle types, ammonia emitted from gasoline and liquid petroleum gasoline fuels types limited the secondary production of NH4NO3. The results suggest that gasoline and liquid petroleum gasoline vehicles with three-way catalysts could be an important source of ammonia for NH4NO3aerosol formation in ammonia-limited environments, including the Seoul Metropolitan Region. � 2017
Department of Chemistry, Colorado State University, Fort Collins, CO, United States; Transportation Pollution Research Center, National Institute of Environmental Research, Incheon, South Korea; Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, South Korea; Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea
Recommended Citation:
Link M,F,, Kim J,et al. Elevated production of NH4NO3 from the photochemical processing of vehicle exhaust: Implications for air quality in the Seoul Metropolitan Region[J]. Atmospheric Environment,2017-01-01,156