Article | REF: BM2502 V1

Air Quality and Automobile. Status on Air Quality in Large Cities

Authors: Karine PAJOT, Nils MATTHESS, Pierre MACAUDIERE

Publication date: November 10, 2020, Review date: January 13, 2021

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3. Three pollutants: particulate matter, NOx and O3

We will draw up an inventory of emissions of each pollutant by sector of activity, and analyze the concentrations observed in the atmosphere, from the local to the European scale. Specifically for ozone, emission levels of NMVOCs, which contribute along with NOx to its formation, will be presented, along with the resulting concentrations.

3.1 Particles

The average exhaust particle diameter of a vehicle with an internal combustion engine is around 80 nm, or 0.08 µm. We will therefore focus on emissions of particles with a diameter of less than 2.5 µm (or PM 2.5 ), as these are more representative of road transport. PM 10 , in line with air quality regulations, will also...

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Three pollutants: particulate matter, NOx and O3
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