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Source Characteristics of Volatile Organic Compounds During High Ozone Episodes in Hong Kong, Southern China : Volume 8, Issue 16 (28/08/2008)

By Zhang, J.

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Book Id: WPLBN0003984372
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: Source Characteristics of Volatile Organic Compounds During High Ozone Episodes in Hong Kong, Southern China : Volume 8, Issue 16 (28/08/2008)  
Author: Zhang, J.
Volume: Vol. 8, Issue 16
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Wang, T., Cardelino, C., Streets, D. G., Chameides, W. L., Blake, D. R., & Zhang, J. (2008). Source Characteristics of Volatile Organic Compounds During High Ozone Episodes in Hong Kong, Southern China : Volume 8, Issue 16 (28/08/2008). Retrieved from

Description: School of Geography, Beijing Normal University, Beijing, China. 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 dSO2/dNOy, 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.

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

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