Is Traffic Still an Important Emitter of Monoaromatic Organic Compounds in European Urban Areas? - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Environmental Science and Technology Year : 2018

Is Traffic Still an Important Emitter of Monoaromatic Organic Compounds in European Urban Areas?

Abstract

Trends of long-term observations and emission inventories suggest that traffic emissions will no longer dominate the concentrations of monoaromatic compounds (i.e., TEX - toluene, xylenes, and ethylbenzene) in European urban areas. But the split limit between traffic and other emission sector contributions such as solvent use remains tenuous. Here long-term observations of an extensive set of hydrocarbons, including TEX, at traffic and urban background sites in London, Paris and Strasbourg were combined to estimate the relative importance of traffic emissions on TEX in every city. When analyzing the urban enhancement emission ratios of TEX-to-benzene on a seasonal basis, two potential source signatures other than traffic could be differentiated in all cities (1) summertime evaporation from fuel and/or solvent and (2) wintertime domestic heating. However, traffic emissions still unambiguously dominate the concentration levels of TEX in every city despite the reduction of their emissions at exhaust pipe over the last two decades. Traffic explains between 60% and 96% (at ±20%) of TEX levels while it is less clear for xylenes at some locations. Our results provide a basis to evaluate regional emission inventories. The method is applicable at any urban area where speciated hydrocarbon monitoring is available.
Fichier principal
Vignette du fichier
s1-ln2574963-219109140-1939656818Hwf-1812964453IdV-5178024332574963PDF_HI0001.pdf (1.78 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

insu-01756486 , version 1 (15-07-2019)

Identifiers

Cite

Agnès Borbon, Anne Boynard, Thérèse Salameh, Alexia Baudic, Valerie Gros, et al.. Is Traffic Still an Important Emitter of Monoaromatic Organic Compounds in European Urban Areas?. Environmental Science and Technology, 2018, 52 (2), pp.513 - 521. ⟨10.1021/acs.est.7b01408⟩. ⟨insu-01756486⟩
405 View
203 Download

Altmetric

Share

Gmail Facebook X LinkedIn More