Chemical composition and bioreactivity of PM2.5 during 2013 haze events in China

Kin Fai Ho, Steven Sai Hang Ho, Ru Jin Huang, Hsiao Chi Chuang, Jun Ji Cao, Yongming Han, Ka Hei Lui, Zhi Ning, Kai Jen Chuang, Tsun Jen Cheng, Shun Cheng Lee, Di Hu, Bei Wang, Renjian Zhang

Research output: Contribution to journalArticle

37 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)162-170
Number of pages9
JournalAtmospheric Environment
Volume126
DOIs
Publication statusPublished - Feb 1 2016

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haze
biomass burning
urea
chemical composition
organic carbon
sulfate
ammonium nitrate
air quality
ammonium
nitrate
cost
city
dose
world

Keywords

  • Amines
  • China
  • Haze event
  • Oxidative potential
  • PM

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)

Cite this

Chemical composition and bioreactivity of PM2.5 during 2013 haze events in China. / Ho, Kin Fai; Ho, Steven Sai Hang; Huang, Ru Jin; Chuang, Hsiao Chi; Cao, Jun Ji; Han, Yongming; Lui, Ka Hei; Ning, Zhi; Chuang, Kai Jen; Cheng, Tsun Jen; Lee, Shun Cheng; Hu, Di; Wang, Bei; Zhang, Renjian.

In: Atmospheric Environment, Vol. 126, 01.02.2016, p. 162-170.

Research output: Contribution to journalArticle

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 2016, 'Chemical composition and bioreactivity of PM2.5 during 2013 haze events in China', Atmospheric Environment, vol. 126, pp. 162-170. https://doi.org/10.1016/j.atmosenv.2015.11.055
Ho, Kin Fai ; Ho, Steven Sai Hang ; Huang, Ru Jin ; Chuang, Hsiao Chi ; Cao, Jun Ji ; Han, Yongming ; Lui, Ka Hei ; Ning, Zhi ; Chuang, Kai Jen ; Cheng, Tsun Jen ; Lee, Shun Cheng ; Hu, Di ; Wang, Bei ; Zhang, Renjian. / Chemical composition and bioreactivity of PM2.5 during 2013 haze events in China. In: Atmospheric Environment. 2016 ; Vol. 126. pp. 162-170.
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