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Volume 23 Issue 3

May  2006

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2006 >  23(3): 468-473

Characteristics of Carbonaceous Particles in Beijing During Winter and Summer 2003

  • 1.

    Beijing Municipal Environmental Monitoring Center, Beijing 100044, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,Beijing Municipal Environmental Monitoring Center, Beijing 100044,Laboratoire des Sciences du Climat et de l’Environment, France,Laboratoire des Sciences du Climat et de l’Environment, France,Beijing Municipal Environmental Monitoring Center, Beijing 100044,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,Beijing Municipal Environmental Monitoring Center, Beijing 100044


doi: 10.1007/s00376-006-0468-5

  • Campaigns were conducted to measure Organic Carbon (OC) and Elemental Carbon (EC) in PM2.5 during winter and summer 2003 in Beijing. Modest differences of PM2.5 and PM10 mean concentrations were observed between the winter and summer campaigns. The mean PM2.5/PM10 ratio in both seasons was around 60%, indicating PM2.5 contributed significantly to PM10. The mean concentrations of OC and EC in PM2.5 were 11.2±7.5 and 6.0±5.0 μgm?3 for the winter campaign, and 9.4±2.1 and 4.3±3.0 μgm?3 for the summer campaign, respectively. Diurnal concentrations of OC and EC in PM2.5 were found high at night and low during the daytime in winter, and characterized by an obvious minimum in the summer afternoon. The mean OC/EC ratio was 1.87±0.09 for winter and 2.39±0.49 for summer. The higher OC/EC ratio in summer indicates some formation of Secondary Organic Carbon (SOC). The estimated SOC was 2.8 μg m?3 for winter and 4.2 μg m?3 for summer.
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    • Manuscript History

    Manuscript received: 10 May 2006
    Manuscript revised: 10 May 2006
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Characteristics of Carbonaceous Particles in Beijing During Winter and Summer 2003

    • 1. Beijing Municipal Environmental Monitoring Center, Beijing 100044, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,Beijing Municipal Environmental Monitoring Center, Beijing 100044,Laboratoire des Sciences du Climat et de l’Environment, France,Laboratoire des Sciences du Climat et de l’Environment, France,Beijing Municipal Environmental Monitoring Center, Beijing 100044,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,Beijing Municipal Environmental Monitoring Center, Beijing 100044
    • Manuscript received: 2006-05-10
    • Manuscript revised: 2006-05-10

    Abstract: Campaigns were conducted to measure Organic Carbon (OC) and Elemental Carbon (EC) in PM2.5 during winter and summer 2003 in Beijing. Modest differences of PM2.5 and PM10 mean concentrations were observed between the winter and summer campaigns. The mean PM2.5/PM10 ratio in both seasons was around 60%, indicating PM2.5 contributed significantly to PM10. The mean concentrations of OC and EC in PM2.5 were 11.2±7.5 and 6.0±5.0 μgm?3 for the winter campaign, and 9.4±2.1 and 4.3±3.0 μgm?3 for the summer campaign, respectively. Diurnal concentrations of OC and EC in PM2.5 were found high at night and low during the daytime in winter, and characterized by an obvious minimum in the summer afternoon. The mean OC/EC ratio was 1.87±0.09 for winter and 2.39±0.49 for summer. The higher OC/EC ratio in summer indicates some formation of Secondary Organic Carbon (SOC). The estimated SOC was 2.8 μg m?3 for winter and 4.2 μg m?3 for summer.

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