1. 2. Earth System Research Laboratory, Chemical Sciences Division, NOAA
VOC species and emission inventory from vehicles and their SOA formation potentials estimation in Shanghai, China
Huang Cheng1, Wang Hongli1, Li Li1, Lu Qing1, Wang Qian1, J. A. de Gouw2
1. State Environmental Protection Key Laboratory of the Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences
2. Earth System Research Laboratory, Chemical Sciences Division, NOAA
GEIA Workshop

2. Motivation of this study
YRD region, China
Shanghai, China
Contributions of vehicle emissions to primary and secondary organic aerosols in the urban atmosphere?
Gasoline or diesel: which one is more important?

3. Development of Vehicle emission inventory Vehicle emission inventory
Traffic flow data
Emission factors
Vehicle emission inventory
[Chen et al., 2007; Huo et al., 2012a; Huo et al., 2012b; Wu et al., 2012; Huang et al., 2013]

4. VOC species of the exhausts from different vehicle types
Gasoline exhaust
Diesel exhaust
Motorcycle

5. Comparisons of gasoline quality limits
Comparisons of VOC species from vehicle emissions in different countries/regions
Comparisons of gasoline quality limits
Contents
Stage 3
(China)
Stage 4
Stage 5
Euro 5
(Europe)
Tier 2
(US)
Sulfur, ppm
≤350
≤50
≤10
≤15
Olefine, %(V/V)
≤30
≤28
≤25
≤18
Aromatic, %(V/V)
≤40
≤35
≤22-25
Benzen, %(V/V)
≤1.0

6. POA and estimated SOA productions
POA emissions and estimated SOA yields from gasoline and diesel vehicles
VOCs
IVOCs
SVOCs
Estimated SOA yields
POA and estimated SOA productions

7. Veh. OA/CO vs. Obs. OA/CO
Summer
Winter
Veh. POA/CO
Veh. POA/CO
Vehicles dominated POA emissions in the urban atmosphere in Shanghai.
Existed VOC species data was far away to explain SOA formation.
No IVOC data.
Other VOC emission sources (e.g. solvent use, Petro and chemical industry, etc.)

8. Thanks for your attention！