Estimation of the emission factors of PAHs by the traffic activities with the model of atmospheric dispersion and deposition from heavy traffic road

Water Science & Technology Volume 56 Issue 1 Page 233-242 published_at 2007-07
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Title ( eng )
Estimation of the emission factors of PAHs by the traffic activities with the model of atmospheric dispersion and deposition from heavy traffic road
Creator
Tokumitsu Hiroyuki
Kojima Keisuke
Source Title
Water Science & Technology
Volume 56
Issue 1
Start Page 233
End Page 242
Abstract
In order to consider the total atmospheric loadings of the PAHs (polycyclic aromatic hydrocarbons) from traffic activities, the emission factors of PAHs were estimated and from the obtained emission factors and vehicle transportation statistics, total atmospheric loadings were integrated and the loadings into the water body were estimated on a regional scale. The atmospheric concentration of PAHs was measured at the roadside of a heavy traffic road in the Hiroshima area in Japan. The samplings were conducted in summer and winter. Atmospheric particulate matters (fine particle, 0.6~ 7 μm; coarse particle, over 7 μm) and their PAH concentration were measured. Also, four major emission sources (gasoline and diesel vehicle emissions, tire and asphalt debris) were assumed for vehicle transportation activities, the chemical mass balance method was applied and the source partitioning at the roadside was estimated. Furthermore, the dispersion of atmospheric particles from the vehicles was modelled and the emission factors of the sources were determined by the comparison to the chemical mass balance results. Based on emission factors derived from the modelling, an atmospheric dispersion model of nationwide scale (National Institute of Advanced Industrial Science and Technology - Atmospheric Dispersion Model for Exposure and Risk assessment: AIST-ADMER) was applied, and the atmospheric concentration and loading to the ground were calculated for the Hiroshima bay watershed area.
Keywords
Polycyclic aromatic hydrocarbons
PAHs
particulate matter
vehicle emission factor
NDC
Chemistry [ 430 ]
Language
eng
Resource Type journal article
Publisher
IWA Publishing
Date of Issued 2007-07
Rights
(c) IWA Publishing 2007. The definitive peer-reviewed and edited version of this article is published in Water Science & Technology Vol. 56, No. 1, pp.233–242, 2007. doi:10.2166/wst.2007.457 and is available at www.iwapublishing.com.
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 0273-1223
[NCID] AA10629180
[DOI] 10.2166/wst.2007.457
[DOI] http://dx.doi.org/10.2166/wst.2007.457