About AAQR

Aims and Scope

Articles online
For contributors
Call for Papers
Guideline for the
Special Issue Proposal
Subscription
Information

Advertising

Contact Us
 
Search for  in   Search  Advanced search  

 

Volume 13, No. 1, February 2013, Pages 407-414 PDF(296 KB)  
doi: 10.4209/aaqr.2012.05.0130   

Autumn and Wintertime Polycyclic Aromatic Hydrocarbons in PM2.5 and PM2.5–10 from Urumqi, China

Yi Li Mire A Bu Da Limu1, Di Li Nuer Ta LiFu1, A Bu Lizi Yi Miti1, Xinming Wang2, Xiang Ding2

1 College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
2 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry Chinese Academy of Sciences, Guangzhou 510640, China

 

Abstract

 

Concurrent sampling of PM2.5 and PM2.5–10 aerosols on a rooftop (15 m above ground) was conducted at a location in urban Urumqi (Xinjiang University 43°77'N, 87°61'E) during September 2010 to March 2011. These filters were analyzed for fifteen polycyclic aromatic hydrocarbons (PAHs). The ΣPAHs (sum of 15 PAHs) ranged from 0.11 to 1058.08 ng/m3 in PM2.5 and 0.01 to 90.89 ng/m3 in PM2.5–10, respectively. 90% of the ΣPAHs existed in PM2.5. In the autumn the ΣPAHs ranged from an undetectable level to 10.93 ng/m3 in PM2.5 and 2.10 ng/m3 in PM2.5–10, and in the winter from an undetectable level to 54.11 ng/m3 in PM2.5 and 5.12 ng/m3 in PM2.5–10.
    Benzo(a)pyrene-equivalent carcinogenic potency (BaPeq) was calculated to evaluate the cancer risk of carcinogenic PAHs to the public. The level of BaPeq in PM2.5 was an average of 5.97 ng/m3, significantly higher than the value recommended by the WTO (1 ng/m3). This suggests that it is important to control regional combustion sources to reduce air pollution-related health risks in urban Urumqi.

 

 

Keywords: Fine particulate (PM2.5); Coarse particulate (PM2.5–10); PAHs Source apportionment; Urumqi.

 

 

Copyright © 2009-2014 AAQR All right reserved.