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《Environmental Engineering》 2016-S1
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CHARACTERISTICS OF PM_(2.5) EMISSIONS AND ITS CARBONACEOUS COMPONENTS ANALYSIS FROM CHINA Ⅲ DIESEL VEHICLES IN CHENGDU

Chen Junhui;Fan Wubo;Li Yuan;Zhang Liang;Zhao Wenyan;Qian Jun;Ye Hong;Sichuan Research Institute of Environmental Protection;Key Laboratory of mobile source in Sichuan Province;  
The major sources of vehicles PM2. 5emissions with complex composition is from diesel vehicles,and it causes great harm to human health. In order to study the PM2. 5emission characteristics and its carbonaceous composition of China Ⅲ diesel vehicles in Chengdu,a portable vehicles testing devices was applied to collect the PM2. 5emissions from a heavy-duty diesel vehicle( HD),a medium-duty diesel vehicle( MD) and a light-duty diesel vehicle( LD),and the emission factor,surface profile and carbonaceous components of PM2. 5were analyzed. The results showed that: 1) the emission factors of PM2. 5of HD,MD and LD were 0. 12,0. 4,0. 03 g / km,respectively. 2) The color of the particles were dark brown or black; the particle size was mainly concentrated in 50 ~ 300 nm,which was based on accumulation mode. 3) Carbonaceous components were the main fraction of diesel exhaust particles,accounting for 68% ~ 75% of the total PM2. 5mass; the OC / EC of HD、MD and LD were2. 93,2. 88,3. 1,respectively. The main component of OC and EC were OC1 and EC1.
【Fund】: 四川省科研院所公益性基本科研项目
【CateGory Index】: X734.2
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