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北京地区大气中VHCs观测结果的初步分析 被引量:9

THE PRELIMINARY STUDY ON MEASURED RESULTS OF AMBIENT VHCs IN BEIJING AREAS
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摘要 采用Tenax TA和碳分子筛吸附富集-热脱附-毛细管柱气相色谱法,测定了北京地区大气中C2~C10可挥发性烃类化合物(简称VHCs)的浓度变化.从2001年9月到2003年8月,先后采集到有效样品113个.检出55个VHCs 组分,其中烷烃26个,烯烃19个,芳香烃10个.TVHCs的平均浓度为364.3±99.3 μg/m3;11月份浓度最高,为546.9±353.5 μg/m3,8月份浓度最低,为251.8±152.4 μg/m3;采暖季比非采暖季高30%,城区比郊区高10%;有明显的日变化.初步分析发现,机动车尾气排放和天气气象条件是造成北京地区大气VHCs污染的两个最主要因素. The variation of atmospheric concentration of C2-C10 volatile hydrocarbon compounds (VHCs) is measured out in Beijing areas using Tenax TA and Carbosieve sorption-thermodessorption-capillary gas chromatography. 113 samples are collected during the period of September 2001 to August 2003. 55 VHCs Species are detected including 26 alkanes, 19 alkenes and 10 aromatics. The average mass concentration of VHCs is 364.3 ± 99.3 μg/m^3. The seasonal peak value is 546.9 ± 353.5 μ/m^3 which appears in autumn. The valley value appears in summer which is 251.8 ± 152.4μg/m^3. The VHCs average concentration is 30% in the heating season more than that in the non-heating season. The average concentration in the urban area is 10 % higher than that in the suburbs. There are the significant daily variations of VHCs in Beijing. Results show that the polluted levels of ambient air depended mainly on the vehicle emissions and the meteorological conditions.
出处 《应用气象学报》 CSCD 北大核心 2005年第5期600-607,共8页 Journal of Applied Meteorological Science
基金 国家基础研究发展规划项目(TG1999045700) 科技部国际科技合作重点项目(2004DFA06100)共同资助
关键词 热解吸 毛细柱气相色谱法 挥发性烃类化合物 时空变化 北京地区 观测结果 大气 毛细管柱气相色谱法 机动车尾气排放 浓度变化 Thermal desorption Capillary gas chromatography Volatile hydrocarbon compounds Special and temporal distribution
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  • 1王跃思,周立,王明星,郑循华,张仁健.北京大气中可形成气溶胶的有机物——现状及变化规律的初步研究[J].气候与环境研究,2000,5(1):13-19. 被引量:34
  • 2Read R, Read C. Breathing can be hazardous to your health. New Scientist, 1991,23(2):34-37.
  • 3Shinji Saito, Ippei Nagao,Hiroshi Tanaka. Relationship of NOx and NMHC to photochemical O3 production in a coastal and metropolitan areas of Japan. Atmos Environ ,2002, 36 : 1277- 1286.
  • 4Broderick B M, Marnane I S. A comparison of the C2-C9 hydrocarbon compositions of vehicle fuels and urban air in Dublin, Ireland. Atmos Environ ,2002,36 : 975 - 986.
  • 5Duffy B L, Nelso P E. Non methane exhaust composition in the Sydney Harbour Tunnel:a focus on benzene and 1,3-butadiene. Atmos Environ ,1996,30:2759-2786.
  • 6Atkinson R . Atmospheric chemistry of VOCs and NO. Atmos Environ ,2000,34:2063-2101.
  • 7Haagen-Smit A J,Fox M M . Photochemical ozone formation with hydrocarbon and automobile exhaust. J of air pollution control association, 1954,4:105 - 109.
  • 8Brasseur G P, Chartfield R B. The Fate of Biogenic Trace Gases in the Atmosphere. In: Sharkey T D, et al. ed. Trace Gas Emissions by Plants, London:Academic Press, 1991. 1-27.
  • 9Sturges W T. New direction: VOCs and biosphere-atmosphere feedbacks. Atmos Environ ,2001,35:189-191.
  • 10Fehsenfeld F, Calvert J ,Fall R ,et al. Emissions of volatile organic compounds from vegetation and the implications for atmospheric chemistry. Global Biogeochemical Cycles, 1992,96:389- 430.

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