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Title: Concentration variations in primary and secondary particulate matter near a major road in Korea

Here, particle-phase concentrations were measured at 10, 80, and 200 m from the roadside of a national highway near Seoul in January and May 2008. The highway has two lanes each way, with an average hourly traffic volume of 1,070 vehicles. In January 2008, PM 10 concentrations decreased from 10 to 80 m but increased at 200 m. Black carbon (BC) decreased only slightly with distance due to the influence of biomass burning and open burning from the surrounding areas. In May 2008, the effect of secondary formation on both PM 10 and PM 2.5 was significant due to high temperatures compared with January. Because on-road emissions had little effect on secondary formation for a short time, variations in PM 10 concentrations became smaller, and PM 2.5 concentrations increased with distance. The effects of fugitive dust on PM concentrations were greater in May than in January when the mean temperature was below freezing. In the composition variations, the amounts of primary ions, organic carbon (OC), and BC were larger in January, while those of secondary ions and others were larger in PM 10, as well as PM 2.5 in May.
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [6]
  1. Hankuk Univ. of Foreign Studies, Gyeonggi (Korea)
  2. Hankuk Univ. of Foreign Studies, Gyeonggi (Korea); National Institute of Environmental Research, Incheon (Korea)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Korea Institute of Science and Technology, Seoul (Korea)
  5. Ewha Womans Univ., Seoul (Korea)
  6. Jeju National Univ., Jeju (Korea)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Asian Journal of Atmospheric Environment
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 1976-6912
Asian Association for Atmospheric Environment
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
Hankuk Univ. of Foreign Studies, Korea; USDOE
Country of Publication:
United States
54 ENVIRONMENTAL SCIENCES; 09 BIOMASS FUELS; vehicle emissions; biomass burning; fugitive dust; open burning; secondary formation
OSTI Identifier: