Characteristics of air pollution of Hebei and sources of PM2.5 during Asia-Pacific Economic Cooperation
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    Abstract:

    The characteristics of PM2.5 in 13 cities before, during, and after APEC period were analyzed, and the sources of PM2.5 using the chemical components of PM2.5 were identified. The results show that the concentrations of PM2.5 decrease by 58.7%, 52.9%, 50.1%, 47.3%, 43.5%, 36.7%, 34.9%, 33.4%, 29.6%, 26.9%, 20.2%, 19.9%, and 12.8% in Beijing, Shijiazhuang, Chengde, Langfang, Xingtai, Zhangjiakou, Handan, Tangshan, Tianjin, Hengshui, Cangzhou, Qinhuangdao, and Baoding during APEC period, respectively, compared with before APEC period. The concentrations of PM2.5 decreased on average 35.9%, which is higher than 17.5% of SO2, 21.3% of NO2, and 22.0% of CO. The concentrations of NO3-, SO42- and NH4+ decreased by 32.0%, 32.9% and 39.1%, respectively, compared with the APEC period. There is no notable difference for the PM2.5 sources before and during APEC period. The source contributions of coal/biomass combustion, metal smelting, and oil combustion increased to 21.7%, 14.0% and 20.8%, meanwhile, the source contributions of dust, industry, and secondary source decreased to 12.6%, 11.8% and 19.2%, respectively.

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WEI Zhe, ZHANG Zekun, SHI Wenhao, HE Yu, DENG Mengjie, WANG Litao. Characteristics of air pollution of Hebei and sources of PM2.5 during Asia-Pacific Economic Cooperation[J].,2016,33(4):76-82,88

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History
  • Received:June 14,2016
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  • Online: December 28,2016
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