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Kazuhiko Sakamoto,Tomohiro Sakaguchi,Zhaowu Jiang,Tarek Mohamed Naser,Kazuhiko Sekiguchi,Qingyue Wang,Katsuyuki Takahashi 한국대기환경학회 2007 한국대기환경학회 학술대회논문집 Vol.- No.-
To clarify the effect of the Diesel Vehicle Exhaust Gas Regulations enforced by Tokyo Metropolis, Saitama, Kanagawa, and Chiba Prefectures in October, 2003, we compared concentration of various chemical components in size-separated SPM and traffic volume of 2002 or 2003 (before the Regulation) to that of 2003 or 2004 (after the Regulation) at the road site of National Road Route 17 and Prefecture Road Route 57. Generally, decreasing tendency in EC concentration of each particle sizes was found from 2002 and 2003 to 2003 and 2004 sampling periods, respectively. Especially, decrease in average concentration of EC<SUB><2㎛</SUB> was clear. In the next, we analyzed various correlations of chemical components in size-separated SPM and traffic volume. From their results, we concluded decrease of the EC<SUB><2㎛</SUB> concentration at the roadside was caused by this Regulation. Also, we will discuss on long term trend of mass concentrations and chemical composition for SPM and fine particles observed at general environment and around the other trunk roads in the greater Tokyo Metropolitan Area.