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学科主题: 公共卫生
题名:
On-road diesel vehicle emission factors for nitrogen oxides and black carbon in two Chinese cities
作者: Wang, Xing1; Westerdahl, Dane1; Hu, Jingnan2; Wu, Ye3; Yin, Hang4; Pan, Xiaochuan5; Zhang, K. Max1
关键词: Emission factor ; Diesel ; Climate change ; Air pollution ; Nitrogen oxides ; Black carbon
刊名: ATMOSPHERIC ENVIRONMENT
发表日期: 2012
DOI: 10.1016/j.atmosenv.2011.10.033
卷: 46, 页:45-55
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Environmental Sciences ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
关键词[WOS]: SOURCE APPORTIONMENT ; PARTICULATE MATTER ; FINE PARTICLES ; AIR-POLLUTION ; PM2.5 ; IMPACTS ; DYNAMOMETER ; GASOLINE ; QUALITY ; TRUCKS
英文摘要:

Nitrogen oxides (NOx) and black carbon (BC) emission factors (EF) of 440 on-road diesel trucks were determined by conducting on-road chasing studies in Beijing and Chongqing, China, in the winter 2010. NOx and BC EF distributions are reported. The median NOx EFs for trucks sampled on level roads in Chongqing and Beijing are 40.0 and 47.4 g kg-fuel(-1), respectively. The median BC EFs are 1.1 and 0.4 g kg-fuel(-1)in Chongqing and Beijing, respectively. In addition, a clear downward trend of BC EFs of on-road diesel trucks sampled in Beijing since 2008 is observed. Moreover, Beijing-registered trucks had the lowest BC EFs among the entire sample. These observations appear to reflect the effectiveness of emission standard and fuel quality standard implemented in Beijing (China IV) and nationwide (China III) in reducing BC (and likely overall particulate matter) emission. However, NOx EFs for Beijing-registered trucks did not show lower value than those from other regions. Unlike black carbon, there is no clear correlation between emission controls and NOx emissions from the sampled on-road trucks. Further analysis shows that trucks with high BC EFs do not usually have high NOx EFs, and vice versa, indicating that the current emission standards implemented in Beijing and nationwide have only limited impact on NOx emissions control. Therefore, effective multi-pollutant control strategies and in-use compliance programs are imperative to reduce the overall emissions from the transportation sector. (C) 2011 Elsevier Ltd. All rights reserved.

语种: 英语
所属项目编号: EP-C-06-003
项目资助者: US Environmental Protection Agency (USEPA)
WOS记录号: WOS:000298763200006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/64168
Appears in Collections:北京大学公共卫生学院_期刊论文

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作者单位: 1.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
2.Cornell Univ, Sibley Sch Mech & Aerosp Engn, Ithaca, NY 14853 USA
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
4.Minist Environm Protect PR China, Vehicle Emiss Control Ctr, Beijing 100012, Peoples R China
5.Peking Univ, Sch Publ Hlth, Dept Occupat & Environm Hlth, Beijing 100083, Peoples R China

Recommended Citation:
Wang, Xing,Westerdahl, Dane,Hu, Jingnan,et al. On-road diesel vehicle emission factors for nitrogen oxides and black carbon in two Chinese cities[J]. ATMOSPHERIC ENVIRONMENT,2012,46:45-55.
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