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北京及周边地区夏季PM2.5中含碳组分污染特征与来源解析

沈嵩 刘蕾 温维 邢奕 苏伟 孙嘉祺

沈嵩, 刘蕾, 温维, 邢奕, 苏伟, 孙嘉祺. 北京及周边地区夏季PM2.5中含碳组分污染特征与来源解析[J]. 环境工程, 2022, 40(2): 71-80. doi: 10.13205/j.hjgc.202202012
引用本文: 沈嵩, 刘蕾, 温维, 邢奕, 苏伟, 孙嘉祺. 北京及周边地区夏季PM2.5中含碳组分污染特征与来源解析[J]. 环境工程, 2022, 40(2): 71-80. doi: 10.13205/j.hjgc.202202012
SHEN Song, LIU Lei, WEN Wei, XING Yi, SU Wei, SUN Jiaqi. POLLUTION CHARACTERIZATION AND SOURCE ANALYSIS OF CARBON COMPONENTS OF PM2.5 IN BEIJING AND SURROUNDING AREAS IN SUMMER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 71-80. doi: 10.13205/j.hjgc.202202012
Citation: SHEN Song, LIU Lei, WEN Wei, XING Yi, SU Wei, SUN Jiaqi. POLLUTION CHARACTERIZATION AND SOURCE ANALYSIS OF CARBON COMPONENTS OF PM2.5 IN BEIJING AND SURROUNDING AREAS IN SUMMER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 71-80. doi: 10.13205/j.hjgc.202202012

北京及周边地区夏季PM2.5中含碳组分污染特征与来源解析

doi: 10.13205/j.hjgc.202202012
基金项目: 

国家自然科学基金项目(21806183)

北京市科技计划项目(Z191100009119008)

详细信息
    作者简介:

    沈嵩(1998-),硕士,主要研究方向为大气污染防治。shensong@163.com

    通讯作者:

    温维(1988-),副教授,主要研究方向为大气污染防治。wenwei@ustb.edu.cn

POLLUTION CHARACTERIZATION AND SOURCE ANALYSIS OF CARBON COMPONENTS OF PM2.5 IN BEIJING AND SURROUNDING AREAS IN SUMMER

  • 摘要: 为研究《打赢蓝天保卫战三年行动计划》等政策实施后北京及其周边区域夏季环境PM2.5含碳组分特征及来源,2019年7月分别在北京城区与河北郊区的2个站点同步连续采集大气PM2.5样品,利用热光碳分析仪分别测定了有机碳(OC)和元素碳(EC)及其组分的质量浓度;通过最小OC/EC比值法、最小相关系数法估算了二次有机碳(SOC)浓度;利用主成分分析、后向轨迹分析等方法探究了含碳气溶胶的来源。结果表明:夏季北京城区PM2.5ρ(OC)和ρ(EC)平均分别为(6.34±0.64),(1.96±0.29)μg/m3,分别占ρ(PM2.5)的18.65%和5.78%;河北郊区PM2.5ρ(OC)与ρ(EC)平均分别为(6.29±0.79),(3.54±0.63)μg/m3,分别占ρ(PM2.5)的17.69%和9.53%。2种方法估算出北京城区的ρ(SOC)分别为(3.35±0.59),3.98μg/m3,分别占ρ(OC)的(51.77±6.97)%和68.48%;河北郊区的ρ(SOC)分别为(3.28±0.69),4.17μg/m3,分别占ρ(OC)的(62.42±9.62)%和68.32%。此外,夏季北京城区与河北郊区均存在较为严重的二次污染;北京城区含碳组分主要污染源是混合机动车排放、道路扬尘及燃烧源;而工业燃煤排放、机动车尾气及扬尘是河北郊区含碳组分的主要污染源。后向轨迹分析发现,夏季气团轨迹主要来自东南、西南及偏南方向,且对北京城区与河北郊区2个区域PM2.5中碳组分的影响较大。
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  • 收稿日期:  2021-03-15
  • 网络出版日期:  2022-04-02
  • 刊出日期:  2022-04-02

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