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Oxidative Potential Characterization of Different PM 2.5 Sources and Components in Beijing and the Surrounding Region

Author

Listed:
  • Wei Wen

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Tongxin Hua

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Lei Liu

    (State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing 100081, China)

  • Xiaoyu Liu

    (Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China)

  • Xin Ma

    (CMA Earth System Modeling and Prediction Centre, Beijing 100081, China)

  • Song Shen

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Zifan Deng

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

With the implementation of air pollution control measures, the concentration of air pollutants in the North China Plain has exhibited a downward trend, but severe fine particulate matter (PM 2.5 ) pollution remains. PM 2.5 is harmful to human health, and the exploration of its source characteristics and potential hazards has become the key to mitigating PM 2.5 pollution. In this study, PM 2.5 samples were collected in Beijing and Gucheng during the summer of 2019. PM 2.5 components, its oxidative potential (OP), and health risks were characterized. The average PM 2.5 concentrations in Beijing and Gucheng during the sampling period were 34.0 ± 6.1 μg/m 3 and 37.1 ± 6.9 μg/m 3 , respectively. The principal component analysis (PCA) results indicated that the main sources of PM 2.5 in Beijing were vehicle exhaust and secondary components and that the main sources in Gucheng were industrial emissions, dust and biomass combustion. The OP values were 91.6 ± 42.1 and 82.2 ± 47.1 pmol/(min·m 3 ), respectively, at these two sites. The correlation between the chemical components and the OP values varied with the PM 2.5 sources at these two locations. The health risk assessment results demonstrated that Cr and As were potentially carcinogenic to all populations at both sites, and Cd posed a potential carcinogenic risk for adults in Gucheng. Regional cooperation regarding air pollution control must be strengthened to further reduce PM 2.5 pollution and its adverse health effects.

Suggested Citation

  • Wei Wen & Tongxin Hua & Lei Liu & Xiaoyu Liu & Xin Ma & Song Shen & Zifan Deng, 2023. "Oxidative Potential Characterization of Different PM 2.5 Sources and Components in Beijing and the Surrounding Region," IJERPH, MDPI, vol. 20(6), pages 1-18, March.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:6:p:5109-:d:1096739
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    References listed on IDEAS

    as
    1. Qianqian Yang & Qiangqiang Yuan & Tongwen Li & Huanfeng Shen & Liangpei Zhang, 2017. "The Relationships between PM 2.5 and Meteorological Factors in China: Seasonal and Regional Variations," IJERPH, MDPI, vol. 14(12), pages 1-19, December.
    2. Athanasios Valavanidis & Thomais Vlachogianni & Konstantinos Fiotakis & Spyridon Loridas, 2013. "Pulmonary Oxidative Stress, Inflammation and Cancer: Respirable Particulate Matter, Fibrous Dusts and Ozone as Major Causes of Lung Carcinogenesis through Reactive Oxygen Species Mechanisms," IJERPH, MDPI, vol. 10(9), pages 1-22, August.
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