Abstract
Keywords:
Diesel exhaust, Smog chamber, Ozone, Secondary aerosols
Abstract
The effect of diesel exhaust on the formation of ozone and particles during photochemical reactions of ambient air was investigated using twin smog chambers. The ozone production rates and particle mass formed during photochemical reactions of diesel exhaust diluted with ambient air were lower than those of ambient air. These results were well explained with relatively higher NOx concentration in diesel exhaust because ozone production rates were well correlated with the concentration ratio of BTEX/NOx, and particle formation with the ozone production rates.