A significant reduction in the coal contribution to PM2.5 and exposed health risks due to the energy structure transition

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Pollution Research Pub Date : 2025-02-13 DOI:10.1016/j.apr.2025.102457

Dongmei Hu , Mingyang Yuan , Yulong Yan , Xiaolin Duan , Yafei Guo , Yueyuan Niu , Wen Yan , Lin Peng

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Abstract

By collecting PM_2.5 samples containing heavy metals in a typical coal resource-based city, we analyzed the interannual variation of heavy metal concentrations over an extended time period (2018–2022). This analysis involved apportioning the sources of these heavy metals and evaluating the carcinogenic and non-carcinogenic health risks posed to different populations via the respiratory route. Results showed that Cd (83.99%), Zn (62.56%), Pb (56.97%), and As (2.60%) were associated with coal combustion, exhibiting decreasing trends. The maximal information coefficient (MIC) indicated that most of the elements with strong correlations were associated with coal combustion. Four sources, namely coal combustion, resuspended dust, traffic emission, and industry, were determined using positive matrix factorization. Cr posed the highest carcinogenic risk, particularly among adults. Coal consumption and its contribution showed significant reductions due to the energy structure transition of coal reduction. Notably, the top three metals in terms of carcinogenic risk were all associated with coal combustion. The carcinogenic risk associated with Cd and As from coal combustion was significantly lower in 2022 than in 2018.

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来源期刊

Atmospheric Pollution Research ENVIRONMENTAL SCIENCES-

CiteScore

8.30

自引率

6.70%

发文量

256

审稿时长

36 days

期刊介绍： Atmospheric Pollution Research (APR) is an international journal designed for the publication of articles on air pollution. Papers should present novel experimental results, theory and modeling of air pollution on local, regional, or global scales. Areas covered are research on inorganic, organic, and persistent organic air pollutants, air quality monitoring, air quality management, atmospheric dispersion and transport, air-surface (soil, water, and vegetation) exchange of pollutants, dry and wet deposition, indoor air quality, exposure assessment, health effects, satellite measurements, natural emissions, atmospheric chemistry, greenhouse gases, and effects on climate change.