Title: Estimations of road vehicle primary NO2 exhaust emission fractions using monitoring data in London Author(s): David C. Carslaw & Sean D. Beevers Date Published: 14/08/2004 | |||
Hourly mean concentration data for nitrogen oxides (NOX), nitrogen dioxide (NO2) and ozone (O3) have been used to derive a method for estimating the mean primary NO2 fraction from vehicle exhausts in London. A set of simple chemical equations has been used to explain the differences in NO2 concentrations between background and roadside site pairs and to estimate the proportion of NO2 that is likely to be derived from primary NO2 vehicle emissions and the NO2 formed through the reaction of nitric oxide (NO) with O3. These results suggest that there is a wide range of primary NO2 emission fractions observed on different roads in London.
Atmospheric Environment 39 (2005) 167–177 |
|||
Download Now (797 kB) | Not Available to Buy | ||
No Previous | No Next | Back to report list |
The latest news and research from ERG: View the archive