Citation: Shan Huang, Min Shao, Sihua Lu, Ying Liu. Reactivity of ambient volatile organic compounds (VOCs) in summer of 2004 in Beijing[J]. Chinese Chemical Letters, ;2008, 19(5): 573-576. doi: 10.1016/j.cclet.2008.03.029 shu

Reactivity of ambient volatile organic compounds (VOCs) in summer of 2004 in Beijing

State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China

Received Date: 3 December 2007

Fund Project: This study was funded by National Natural Science Foundation of China (No.40575059 and No.20637001).

Ambient volatile organic compounds (VOCs) were sampled at six sites in Beijing in the summer of 2004 and analyzed byGCMS. The chemical reactivities of 73 quantified VOCs species were evaluated by OH loss rates (L_OH) and ozone formationpotentials (OFPs). Top 15 reactive species, mainly alkenes and aromatics, were identified by these two methods, and accounted formore than 70% of total reactivity of VOCs. In urban areas, isoprene was the most reactive species in term of OH loss rate,contributing 11.4% to the L_OH of VOCs. While toluene, accounting for 9.4% of OFPs, appeared to have a long-time role in thephotochemical processes. Tongzhou site is obviously influenced by local chemical industry, but the other five sites showed typicalurban features influenced mainly by vehicular emissions.
- VOC,
- Reactivity,
- OH loss rate,
- Ozone formation potential
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