Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43380
Title: Chemical composition and bioreactivity of PM2.5 during 2013 haze events in China
Authors: Ho, KF
Ho, SSH
Huang, RJ
Chuang, HC
Cao, JJ
Han, Y
Lui, KH
Ning, Z
Chuang, KJ
Cheng, TJ
Lee, SC 
Hu, D
Wang, B
Zhang, R
Keywords: Amines
China
Haze event
Oxidative potential
PM2.5
Issue Date: 2016
Publisher: Pergamon Press
Source: Atmospheric environment, 2016, v. 126, p. 162-170 How to cite?
Journal: Atmospheric environment 
Abstract: Chemical composition and bioreactivity of PM2.5 samples collected from Beijing (BJ), Xi'an (XA), Xiamen (XM) and Hong Kong (HK) in China during haze events were characterized. PM2.5 mass concentrations in BJ, XA, XM and HK in the episodes were found to be 258 ± 100 μg m-3, 233 ± 52 μg m-3, 46 ± 9 μg m-3 and 48 ± 13 μg m-3, respectively. Significant increase of sulfate, nitrate and ammonium concentrations in northern cities were observed. High contributions of biomass burning emissions to organic carbon (OC) in northern cities were estimated in this study implying frequent biomass burning during the haze periods. The urea concentrations in PM2.5 were 1855 ± 755 ng m-3 (BJ), 1124 ± 243 ng m-3 (XA), 543 ± 104 ng m-3 (XM) and 363 ± 61 ng m-3 (HK) suggesting higher or close to upper limits compared to other regions in the world. Dose-dependent alterations in oxidative potential, IL-6, IFN-γ and TNF-α levels were also investigated. The oxidative potential levels are BJ > XM > XA > HK, whereas levels of IL-6, IFN-γ and TNF-α were BJ > XA > XM > HK. The sulfate, nitrate, ammonium, OC, urea and levoglucosan are associated with oxidative-inflammatory responses. These experimental results are crucial for the policymakers to implement cost-effective abatement strategies for improving air quality.
URI: http://hdl.handle.net/10397/43380
ISSN: 1352-2310
EISSN: 1873-2844
DOI: 10.1016/j.atmosenv.2015.11.055
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

6
Last Week
0
Last month
Citations as of Aug 19, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
Citations as of Aug 21, 2017

Page view(s)

55
Last Week
0
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.