Article Dans Une Revue Science of the Total Environment Année : 2017

Primary particulate emissions and secondary organic aerosol (SOA) formation from idling diesel vehicle exhaust in China

W. Deng
  • Fonction : Auteur
Q. H. Hu
  • Fonction : Auteur
T. Y. Liu
  • Fonction : Auteur
X. M. Wang
  • Fonction : Auteur
Y. L. Zhang
  • Fonction : Auteur
W. Song
  • Fonction : Auteur
Y. L. Sun
  • Fonction : Auteur
X. H. Bi
  • Fonction : Auteur
J. Z. Yu
  • Fonction : Auteur
W. G. Yang
  • Fonction : Auteur
X. Y. Huang
  • Fonction : Auteur
Zhongkai Zhang
  • Fonction : Auteur
Z. H. Huang
  • Fonction : Auteur
Q. F. He
  • Fonction : Auteur

Résumé

In China diesel vehicles dominate the primary emission of particulate matters from on-road vehicles, and they might also contribute substantially to the formation of secondary organic aerosols (SOA). In this study tailpipe exhaust of three typical in-use diesel vehicles under warm idling conditions was introduced directly into an indoor smog chamber with a 30 m3 Teflon reactor to characterize primary emissions and SOA formation during photo-oxidation. The emission factors of primary organic aerosol (POA) and black carbon (BC) for the three types of Chinese diesel vehicles ranged 0.18–0.91 and 0.15–0.51 g kg-fuel− 1, respectively; and the SOA production factors ranged 0.50–1.8 g kg-fuel− 1 and SOA/POA ratios ranged 0.7–3.7 with an average of 2.2. The fuel-based POA emission factors and SOA production factors from this study for idling diesel vehicle exhaust were 1–3 orders of magnitude higher than those reported in previous studies for idling gasoline vehicle exhaust. The emission factors for total particle numbers were 0.65–4.0 × 1015 particles kg-fuel− 1, and particles with diameters less than 50 nm dominated in total particle numbers. Traditional C2-C12 precursor non-methane hydrocarbons (NMHCs) could only explain less than 3% of the SOA formed during aging and contribution from other precursors including intermediate volatile organic compounds (IVOC) needs further investigation.

Fichier non déposé

Dates et versions

hal-01536724 , version 1 (12-06-2017)

Identifiants

Citer

W. Deng, Q. H. Hu, T. Y. Liu, X. M. Wang, Y. L. Zhang, et al.. Primary particulate emissions and secondary organic aerosol (SOA) formation from idling diesel vehicle exhaust in China. Science of the Total Environment, 2017, 593, pp.462-469. ⟨10.1016/j.scitotenv.2017.03.088⟩. ⟨hal-01536724⟩
134 Consultations
0 Téléchargements

Altmetric

Partager

  • More