引用本文:
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
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
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
Reactivity of ambient volatile organic compounds (VOCs) in summer of 2004 in Beijing
摘要:
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 (LOH) 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 LOH 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.
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关键词:
- VOC
- / Reactivity
- / OH loss rate
- / Ozone formation potential
English
Reactivity of ambient volatile organic compounds (VOCs) in summer of 2004 in Beijing
Abstract:
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 (LOH) 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 LOH 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.
-
Key words:
- VOC
- / Reactivity
- / OH loss rate
- / Ozone formation potential
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