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Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China

Publication ,  Journal Article
Zhang, J; Wang, T; Chameides, WL; Cardelino, C; Blake, DR; Streets, DG
Published in: ATMOSPHERIC CHEMISTRY AND PHYSICS
2008

Measurements of Volatile Organic Compounds (VOC) are analyzed to characterize the sources impacting the Hong Kong area. The ratios of different VOC species, m, p-xylenes-to-ethylbenzene, C6H14-to-toluene and p- xylene-to-total xylenes are used for diagnostic analyses. Photochemical age analysis shows that the sources of reactive aromatics, the most important contributor to the photochemical reactivity, do not appear to be preferentially located in downtown Hong Kong. In addition, they do not appear to be dominated by mobile emissions based on the analyses of speciated VOC data from an earlier study, but related to industrial, waterfront, and fuel-storage activities. The ratios, p-xylene-to-total xylenes and dSO(2)/dNO(y), suggest that the anomalously high pollutant concentrations in western Hong Kong in the early morning hours of two episode days appear to have come from transport of urban-type emissions. Comparison of observed ambient ratios of selected VOC and their ratios in the speciated VOC emission inventories for Hong Kong and adjacent Pearl River Delta (PRD) Region gives mixed results. The observed ratio C6H14-to-toluene is consistent with the speciated version of the VOC emission inventory. The ratios of selected alkanes are not. This may be caused by the ;inaccuracies in the inventory and/or the speciation method.

Duke Scholars

Published In

ATMOSPHERIC CHEMISTRY AND PHYSICS

ISSN

1680-7316

Publication Date

2008

Volume

8

Issue

16

Start / End Page

4983 / 4996

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0401 Atmospheric Sciences
  • 0201 Astronomical and Space Sciences
 

Citation

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Zhang, J., Wang, T., Chameides, W. L., Cardelino, C., Blake, D. R., & Streets, D. G. (2008). Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China. ATMOSPHERIC CHEMISTRY AND PHYSICS, 8(16), 4983–4996.
Zhang, J., T. Wang, W. L. Chameides, C. Cardelino, D. R. Blake, and D. G. Streets. “Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China.” ATMOSPHERIC CHEMISTRY AND PHYSICS 8, no. 16 (2008): 4983–96.
Zhang J, Wang T, Chameides WL, Cardelino C, Blake DR, Streets DG. Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China. ATMOSPHERIC CHEMISTRY AND PHYSICS. 2008;8(16):4983–96.
Zhang, J., et al. “Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China.” ATMOSPHERIC CHEMISTRY AND PHYSICS, vol. 8, no. 16, 2008, pp. 4983–96.
Zhang J, Wang T, Chameides WL, Cardelino C, Blake DR, Streets DG. Source characteristics of volatile organic compounds during high ozone episodes in Hong Kong, Southern China. ATMOSPHERIC CHEMISTRY AND PHYSICS. 2008;8(16):4983–4996.

Published In

ATMOSPHERIC CHEMISTRY AND PHYSICS

ISSN

1680-7316

Publication Date

2008

Volume

8

Issue

16

Start / End Page

4983 / 4996

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0401 Atmospheric Sciences
  • 0201 Astronomical and Space Sciences