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Sulfuric acid and soot particle formation in aircraft exhaust
Author(s) -
Pueschel Rudolf F.,
Verma Sunita,
Ferry Guy V.,
Howard Stephen D.,
Vay Stephanie,
Kinne Stefan A.,
Goodman Jindra,
Strawa Anthony W.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl03479
Subject(s) - aerosol , sulfuric acid , soot , particle (ecology) , particle size , nucleation , range (aeronautics) , volume (thermodynamics) , particle number , exhaust gas , radius , particulates , materials science , analytical chemistry (journal) , chemistry , mineralogy , environmental chemistry , inorganic chemistry , combustion , thermodynamics , organic chemistry , physics , composite material , geology , oceanography , computer security , computer science
Size analyses of Ames wire impactor aircraft exhaust aerosol samples resulted in a continuous particle size distribution between 0.01 µm and 1.0 µm particle radius. The two orders of magnitude size range covered by the measurements correspond to 6–7 orders of magnitude particle concentration. The data determined a nucleation mode, composed of aircraft‐emitted sulfuric acid aerosol, that contributed between 62% and 85% to the total aerosol surface area and between 31% and 34% to its volume. Soot aerosol contributed 0.3% to the surface area and 0.07% to the volume of sulfuric acid aerosol. Emission indices were: EI H2SO4 =0.09 g/kg FUEL and (0.2‐0.5) g/kg FUEL (for 75 ppmm and 675 ppmm fuel‐S, respectively), 1.7E‐40.01 =1.7E14 and (7.7E14 and 5.2E15) particles/kg FUEL (for 75 and 675 ppmm fuel‐S, respectively). The sulfur (gas) to sulfuric acid (particle) conversion efficiency was between 10% and 37%.