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Zhang Chengzhong, Ding Chao, Zhou Bianhong, Tao Li, Liu Lizhong. Pollution characteristics of carbon aerosol in PM2.5 of Xi’an during winter and summer[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1477-1481.
Citation: Zhang Chengzhong, Ding Chao, Zhou Bianhong, Tao Li, Liu Lizhong. Pollution characteristics of carbon aerosol in PM2.5 of Xi’an during winter and summer[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1477-1481.
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Pollution characteristics of carbon aerosol in PM2.5 of Xi’an during winter and summer

  • 1.

    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China

  • 2.

    Department of Geographical Science and Environmental Engineering, Baoji University of Arts & Sciences, Baoji 721013, China

  • Received Date: 02/03/2012
    Accepted Date: 19/12/2011
    Available Online: 09/04/2013
    Fund Project:
  • PM2.5 were collected by RP1400a instrument of TEOM series during winter and summer in Xi’an to study the variations of carbon aerosol, and the levels of organic carbon (OC), elemental carbon (EC) and water soluble carbon (WSOC) in samples were determined. The results showed that seasonal average concentrations of OC and EC in PM2.5 were higher in winter, the values were about 2.62 and 1.75 times of summer, respectively, which indicated that carbonaceous aerosol pollution was more serious in winter. The daily average concentrations of OC and EC presented double peak distribution in different seasons, that was mainly caused by the traffic source emissions and adverse weather conditions. The concentrations of OC and EC showed significant correlations in winter (R2 =0.823) and summer (R2=0.543), the average ratios of OC/EC were 5.36 and 3.58, respectively, which suggested that secondary organic carbon (SOC) were generated in the atmospheric particles.
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Pollution characteristics of carbon aerosol in PM2.5 of Xi’an during winter and summer

  • Received Date: 02/03/2012
  • Accepted Date: 19/12/2011
  • Available Online: 09/04/2013
Fund Project:

Abstract: PM2.5 were collected by RP1400a instrument of TEOM series during winter and summer in Xi’an to study the variations of carbon aerosol, and the levels of organic carbon (OC), elemental carbon (EC) and water soluble carbon (WSOC) in samples were determined. The results showed that seasonal average concentrations of OC and EC in PM2.5 were higher in winter, the values were about 2.62 and 1.75 times of summer, respectively, which indicated that carbonaceous aerosol pollution was more serious in winter. The daily average concentrations of OC and EC presented double peak distribution in different seasons, that was mainly caused by the traffic source emissions and adverse weather conditions. The concentrations of OC and EC showed significant correlations in winter (R2 =0.823) and summer (R2=0.543), the average ratios of OC/EC were 5.36 and 3.58, respectively, which suggested that secondary organic carbon (SOC) were generated in the atmospheric particles.

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