Zhenxing Shen 1,2, Yuemei Han1, Junji Cao2, Jing Tian1, Chongshu Zhu2, Suixin Liu2, Pingping Liu1, Yuanqi Wang1

  • 1 Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • 2 SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

Received: May 31, 2010
Revised: May 31, 2010
Accepted: May 31, 2010
Download Citation: ||https://doi.org/10.4209/aaqr.2009.10.0061  

  • Download: PDF


Cite this article:
Shen, Z., Han, Y., Cao, J., Tian, J., Zhu, C., Liu, S., Liu, P. and Wang, Y. (2010). Characteristics of Traffic-related Emissions: A Case Study in Roadside Ambient Air over Xi’an, China. Aerosol Air Qual. Res. 10: 292-300. https://doi.org/10.4209/aaqr.2009.10.0061


 

ABSTRACT


Traffic-related emissions were measured at a heavy-traffic roadside in Xi’an at the end of April, 2008 to survey the exposure levels of freshly emitted carbon monoxide (CO), mass and chemical composition (OC, EC, inorganic ions, and PAHs) of PM10, and ozone (O3). In general, high levels of mass concentration and chemical species in PM10 were observed during daily heavy traffic periods (morning, noon, and evening traffic rush hours), especially in the morning traffic rush hour. OC and EC accounted for 9.3% and 3.0% of PM10 mass, respectively, and the ratios of OC/EC were constant during the heavy traffic periods (with a mean value of 3.2). Water-soluble ions constituted 14.0% of PM10 and the dominant ionic species were Ca2+, SO42-, and NO3- in the roadside samples. Re-suspended road dust constituted a large fraction of PM10, causing the PM10 samples to become more alkaline. The concentrations of 12 prior-controlled PAHs revealed the potential high health risk of this roadside area in Xi’an. The diurnal variation in CO and O3 exhibited a different trend, which indicated that CO level was largely influenced by the instantaneous emission of vehicles while O3 was closely associated with the overall traffic conditions and meteorological status.


Keywords: Roadside; PM10; Chemical composition; CO; O3


Share this article with your colleagues 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

5.9
2020CiteScore
 
 
81st percentile
Powered by
Scopus






2020 Impact Factor: 3.063
5-Year Impact Factor: 2.857

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.