Ambient PM2.5 and Related Health Impacts of Spontaneous Combustion of Coal and Coal Gangue
Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impac...
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| Published in | Environmental Science & Technology Vol. 55; no. 9; pp. 5763 - 5771 |
|---|---|
| Main Authors | , , , , , , , , , , , , |
| Format | Journal Article |
| Language | English Japanese |
| Published |
Easton
American Chemical Society
04.05.2021
American Chemical Society (ACS) |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public health. This study quantified the emissions of various air pollutants originating from CGSC in Wuhai, a city in China, investigated emission characteristics, and estimated the contribution of CGSC emissions to fine particulate matter (PM2.5) air pollution and related health impacts on a regional scale. The results revealed that the CGSC-related PM2.5 emissions were approximately 4643 t a–1 (95% confidence interval (95% CI): 721; 10447), accounting for 26.3% of the total PM2.5 emissions. Alkanes, alkenes, and aromatics accounted for 69.4, 17.9, and 2.9%, respectively, of the total emissions of volatile organic compounds (VOCs). Due to CGSC emissions, the ambient PM2.5 concentration in Wuhai increased by 5.7 μg m–3 on average, while the nitrate concentration decreased. The number of premature deaths caused by exposure to ambient PM2.5 associated with CGSC reached 381 (95% CI: 290; 452) in Wuhai and surrounding cities in 2017. Urgent control strategies and engineering techniques are needed to mitigate CGSC to protect public health. |
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| AbstractList | Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public health. This study quantified the emissions of various air pollutants originating from CGSC in Wuhai, a city in China, investigated emission characteristics, and estimated the contribution of CGSC emissions to fine particulate matter (PM₂.₅) air pollution and related health impacts on a regional scale. The results revealed that the CGSC-related PM₂.₅ emissions were approximately 4643 t a–¹ (95% confidence interval (95% CI): 721; 10447), accounting for 26.3% of the total PM₂.₅ emissions. Alkanes, alkenes, and aromatics accounted for 69.4, 17.9, and 2.9%, respectively, of the total emissions of volatile organic compounds (VOCs). Due to CGSC emissions, the ambient PM₂.₅ concentration in Wuhai increased by 5.7 μg m–³ on average, while the nitrate concentration decreased. The number of premature deaths caused by exposure to ambient PM₂.₅ associated with CGSC reached 381 (95% CI: 290; 452) in Wuhai and surrounding cities in 2017. Urgent control strategies and engineering techniques are needed to mitigate CGSC to protect public health. Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public health. This study quantified the emissions of various air pollutants originating from CGSC in Wuhai, a city in China, investigated emission characteristics, and estimated the contribution of CGSC emissions to fine particulate matter (PM2.5) air pollution and related health impacts on a regional scale. The results revealed that the CGSC-related PM2.5 emissions were approximately 4643 t a–1 (95% confidence interval (95% CI): 721; 10447), accounting for 26.3% of the total PM2.5 emissions. Alkanes, alkenes, and aromatics accounted for 69.4, 17.9, and 2.9%, respectively, of the total emissions of volatile organic compounds (VOCs). Due to CGSC emissions, the ambient PM2.5 concentration in Wuhai increased by 5.7 μg m–3 on average, while the nitrate concentration decreased. The number of premature deaths caused by exposure to ambient PM2.5 associated with CGSC reached 381 (95% CI: 290; 452) in Wuhai and surrounding cities in 2017. Urgent control strategies and engineering techniques are needed to mitigate CGSC to protect public health. Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public health. This study quantified the emissions of various air pollutants originating from CGSC in Wuhai, a city in China, investigated emission characteristics, and estimated the contribution of CGSC emissions to fine particulate matter (PM2.5) air pollution and related health impacts on a regional scale. The results revealed that the CGSC-related PM2.5 emissions were approximately 4643 t a-1 (95% confidence interval (95% CI): 721; 10447), accounting for 26.3% of the total PM2.5 emissions. Alkanes, alkenes, and aromatics accounted for 69.4, 17.9, and 2.9%, respectively, of the total emissions of volatile organic compounds (VOCs). Due to CGSC emissions, the ambient PM2.5 concentration in Wuhai increased by 5.7 μg m-3 on average, while the nitrate concentration decreased. The number of premature deaths caused by exposure to ambient PM2.5 associated with CGSC reached 381 (95% CI: 290; 452) in Wuhai and surrounding cities in 2017. Urgent control strategies and engineering techniques are needed to mitigate CGSC to protect public health.Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public health. This study quantified the emissions of various air pollutants originating from CGSC in Wuhai, a city in China, investigated emission characteristics, and estimated the contribution of CGSC emissions to fine particulate matter (PM2.5) air pollution and related health impacts on a regional scale. The results revealed that the CGSC-related PM2.5 emissions were approximately 4643 t a-1 (95% confidence interval (95% CI): 721; 10447), accounting for 26.3% of the total PM2.5 emissions. Alkanes, alkenes, and aromatics accounted for 69.4, 17.9, and 2.9%, respectively, of the total emissions of volatile organic compounds (VOCs). Due to CGSC emissions, the ambient PM2.5 concentration in Wuhai increased by 5.7 μg m-3 on average, while the nitrate concentration decreased. The number of premature deaths caused by exposure to ambient PM2.5 associated with CGSC reached 381 (95% CI: 290; 452) in Wuhai and surrounding cities in 2017. Urgent control strategies and engineering techniques are needed to mitigate CGSC to protect public health. |
| Author | Li, Shixue Shi, Tenglong Chen, Bing Li, Guangyao Chen, Qiang Chen, Mei Liu, Mingyue Liu, Xiao Feng, Wuhu Zhang, Ruixin Guo, Wenkai Chen, Siyu Zhang, Xiaorui |
| AuthorAffiliation | Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences School of Electronic and Information Engineering School of Earth and Environment National Centre for Atmospheric Science Graduate School of Environmental Science Department of Geography, State Key Laboratory of Environmental and Biological Analysis |
| AuthorAffiliation_xml | – name: Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences – name: Graduate School of Environmental Science – name: National Centre for Atmospheric Science – name: School of Electronic and Information Engineering – name: Department of Geography, State Key Laboratory of Environmental and Biological Analysis – name: School of Earth and Environment |
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| Snippet | Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution. However, its emissions are poorly quantified... |
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| SubjectTerms | 2017. Urgent control strategies air air pollutant emission inventories air pollutants Air pollution Alkanes Alkenes ambient PM 2.5 ambient PM 2.5 concentration Anthropogenic Impacts on the Atmosphere Aromatic compounds Biological Sciences not elsewhere classified Biophysics CGSC emissions CGSC-related PM 2.5 emissions Chemical Sciences not elsewhere classified China CI climate Coal Coal Gangue Coal Combustion confidence interval Confidence intervals Emission analysis Emission inventories Emissions Environmental Sciences not elsewhere classified Gangue nitrates Organic compounds Outdoor air quality Particulate emissions Particulate matter particulates PM 2.5 emissions Pollutants Public health Related Health Impacts Science Policy Spontaneous combustion technology VOC VOCs Volatile organic compounds |
| Title | Ambient PM2.5 and Related Health Impacts of Spontaneous Combustion of Coal and Coal Gangue |
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