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首页> 外文期刊>Environmental Monitoring and Assessment >Aerosol size distributions in urban Jinan: Seasonal characteristics and variations between weekdays and weekends in a heavily polluted atmosphere
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Aerosol size distributions in urban Jinan: Seasonal characteristics and variations between weekdays and weekends in a heavily polluted atmosphere

机译：济南市区的气溶胶粒径分布：在严重污染的大气层中，平日和周末的季节性特征和变化

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摘要

Aerosol size distributions, trace gas, and PM_(2.5) concentrations have been measured in urban Jinan, China, over 6 months in 2007 and 2008, covering spring, summer, fall, and winter time periods. Number concentrations of particles (10-2,500 nm) were 16,200, 13,900, 11,200, and 21,600 cm~(-3) in spring, summer, fall, and winter, respectively. Compared with other urban studies, Jinan has higher number concentrations of accumulation-mode particles (100-500 nm) and particles (10-2,500 nm), but lower concentrations of ultrafine particles (10-100 nm). The number, surface and volume concentrations, and size distributions of particles showed obvious seasonal variation and are also influenced by traffic emissions. Through correlation analysis, traffic emissions are proposed to be a more important contributor to Atkien-mode and accumulation-mode particles than coal firing. Around midday, the presence of nanoparticles and new particle formation is limited to pre-existing particles from traffic emissions and the mass transport of particles from suburban and rural areas. Compared with other studies in urban areas of Europe and the USA, the variation of particle number concentration and related gas concentration in Jinan between weekdays and weekends is smaller and the reasons has been deduced.
机译：在2007年和2008年的6个月中，对中国济南市区的气溶胶粒径分布，痕量气体和PM_（2.5）浓度进行了测量，涵盖了春季，夏季，秋季和冬季。春季，夏季，秋季和冬季的颗粒数浓度（10-2,500 nm）分别为16,200、13,900、11,200和21,600 cm〜（-3）。与其他城市研究相比，济南的聚集模式颗粒（100-500 nm）和颗粒（10-2,500 nm）浓度更高，而超细颗粒（10-100 nm）的浓度更低。颗粒的数量，表面和体积浓度以及粒径分布表现出明显的季节性变化，并且还受到交通排放的影响。通过相关分析，交通排放被认为是比燃煤更重要的Atkien模式和累积模式颗粒的贡献者。大约在中午，纳米颗粒的存在和新颗粒的形成仅限于交通排放中已存在的颗粒以及来自郊区和农村地区的颗粒的大规模运输。与欧洲和美国城市地区的其他研究相比，济南在工作日和周末之间的颗粒数浓度和相关气体浓度变化较小，并推断出原因。

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  • 来源
    《Environmental Monitoring and Assessment》 |2011年第4期|p.443-456|共14页
  • 作者

    Pengju Xu; Wenxing Wang; Lingxiao Yang; Qingzhu Zhang; Rui Gao; Xinfeng Wang; Wei Nie; Xiaomei Gao;

  • 作者单位

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

    Environment Research Institute, Shandong University, Jinan 250100, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    aerosol; particle number concentration; seasonal variation; diurnal variation; weekday; weekend;

    机译：气雾剂;颗粒数浓度季节性变化;日变化平日周末;

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