Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling
Air quality impairment has a massive impact on human health, with atmospheric particulate matter (PM) playing a major role. The People's Republic of China experienced a trend of increasing PM2.5 concentrations from 2000 to 2013. However, after the application of the Air Pollution Prevention and Control Action Plan and other related control measures, sharp decreases in air pollutant concentrations were particularly evident in the city of Wuhan (central China). This study analysed major changes in PM2.5 concentrations, composition and source apportionment (using receptor modelling) based on Wuhan's PM2.5 chemical speciation datasets from 2006 to 2007, 2019-2021 and contemporaneous gaseous pollutant values. Average SO2 concentrations decreased by 88%, from the first to the second period, mostly due to measures that reduced coal combustion. However, NO2 only declined by 25%, with policy measures likely being undermined by an increased number of vehicles. PM2.5 concentrations decreased by 65%, with the PM constituents each being affected differently. Coal combustion-related element concentrations, OC, SO42-, NH4+, EC, Cl-, Al, Ca, Cu, Fe, Co and NO3- decreased by 22-90%. Secondary inorganic aerosol (SIA) was initially dominated by (NH4)2SO4 (73%) in 2006, but later dominated by NH4NO3 (52%) in 2021. Receptor modelling identified major sources contributing to PM2.5: Mineral, road and desert dust (MRDD), Secondary sulphate (SECS), Secondary nitrate (SECN), Tungsten industry (W), Toxic Elements of Coal (TEC), Iron and Steel (IRONS), Coal Combustion (CC), Residential Heating (RH), Refinery (REF) and Traffic (TRF). In relative proportions, TEC (-83%), SECS (-64%) and SECN (-48%) reduced their contributions to PM2.5 whilst MRDD increased (+62.5%). Thus, the results indicate not only a drastic abatement of PM pollution in Wuhan but also a change in the sources of pollution, which requires further actions to reduce PM2.5 concentrations to health protective values. Secondary PM and fugitive emissions are key components to abate.
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2023-10-25
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Subjects: | Urban background, Atmospheric particulate matter, Geochemistry, PM 2.5, Source apportionment, Wuhan, http://metadata.un.org/sdg/6, Ensure availability and sustainable management of water and sanitation for all, |
Online Access: | http://hdl.handle.net/10261/338577 https://api.elsevier.com/content/abstract/scopus_id/85175253353 |
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dig-idaea-es-10261-3385772024-05-15T20:39:24Z Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling Canals-Angerri, Anna Lv, W. Zhuang, X. Shangguan, Y. Wang, Y. Kong, S. Hopke, P. K. Amato, Fulvio Alastuey, Andrés Van Drooge, Barend Querol, Xavier 0000-0001-6593-5593 Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all Air quality impairment has a massive impact on human health, with atmospheric particulate matter (PM) playing a major role. The People's Republic of China experienced a trend of increasing PM2.5 concentrations from 2000 to 2013. However, after the application of the Air Pollution Prevention and Control Action Plan and other related control measures, sharp decreases in air pollutant concentrations were particularly evident in the city of Wuhan (central China). This study analysed major changes in PM2.5 concentrations, composition and source apportionment (using receptor modelling) based on Wuhan's PM2.5 chemical speciation datasets from 2006 to 2007, 2019-2021 and contemporaneous gaseous pollutant values. Average SO2 concentrations decreased by 88%, from the first to the second period, mostly due to measures that reduced coal combustion. However, NO2 only declined by 25%, with policy measures likely being undermined by an increased number of vehicles. PM2.5 concentrations decreased by 65%, with the PM constituents each being affected differently. Coal combustion-related element concentrations, OC, SO42-, NH4+, EC, Cl-, Al, Ca, Cu, Fe, Co and NO3- decreased by 22-90%. Secondary inorganic aerosol (SIA) was initially dominated by (NH4)2SO4 (73%) in 2006, but later dominated by NH4NO3 (52%) in 2021. Receptor modelling identified major sources contributing to PM2.5: Mineral, road and desert dust (MRDD), Secondary sulphate (SECS), Secondary nitrate (SECN), Tungsten industry (W), Toxic Elements of Coal (TEC), Iron and Steel (IRONS), Coal Combustion (CC), Residential Heating (RH), Refinery (REF) and Traffic (TRF). In relative proportions, TEC (-83%), SECS (-64%) and SECN (-48%) reduced their contributions to PM2.5 whilst MRDD increased (+62.5%). Thus, the results indicate not only a drastic abatement of PM pollution in Wuhan but also a change in the sources of pollution, which requires further actions to reduce PM2.5 concentrations to health protective values. Secondary PM and fugitive emissions are key components to abate. This research was supported by the National Nature Science Foundation of China (Nos. 41972179, 41972180); the European Union's Horizon 2020 research and innovation program under grant agreement 101036245 (RI-URBANS); and the Generalitat de Catalunya (AGAUR 2021 SGR 00447). The authors would like to express our gratitude to the NOAA Air Resources Laboratory (ARL) for the provision of the HYSPLIT transport and dispersion model. Peer reviewed 2023-11-08T09:34:13Z 2023-11-08T09:34:13Z 2023-10-25 artículo http://purl.org/coar/resource_type/c_6501 Environmental Pollution 340, Part 1: 122803 (2023) 02697491 http://hdl.handle.net/10261/338577 10.1016/j.envpol.2023.122803 37890692 2-s2.0-85175253353 https://api.elsevier.com/content/abstract/scopus_id/85175253353 en Environmental pollution (Barking, Essex : 1987) Publisher's version https://doi.org/10.1016/j.envpol.2023.122803 Sí open Elsevier |
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Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all |
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Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all Canals-Angerri, Anna Lv, W. Zhuang, X. Shangguan, Y. Wang, Y. Kong, S. Hopke, P. K. Amato, Fulvio Alastuey, Andrés Van Drooge, Barend Querol, Xavier Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
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Air quality impairment has a massive impact on human health, with atmospheric particulate matter (PM) playing a major role. The People's Republic of China experienced a trend of increasing PM2.5 concentrations from 2000 to 2013. However, after the application of the Air Pollution Prevention and Control Action Plan and other related control measures, sharp decreases in air pollutant concentrations were particularly evident in the city of Wuhan (central China). This study analysed major changes in PM2.5 concentrations, composition and source apportionment (using receptor modelling) based on Wuhan's PM2.5 chemical speciation datasets from 2006 to 2007, 2019-2021 and contemporaneous gaseous pollutant values. Average SO2 concentrations decreased by 88%, from the first to the second period, mostly due to measures that reduced coal combustion. However, NO2 only declined by 25%, with policy measures likely being undermined by an increased number of vehicles. PM2.5 concentrations decreased by 65%, with the PM constituents each being affected differently. Coal combustion-related element concentrations, OC, SO42-, NH4+, EC, Cl-, Al, Ca, Cu, Fe, Co and NO3- decreased by 22-90%. Secondary inorganic aerosol (SIA) was initially dominated by (NH4)2SO4 (73%) in 2006, but later dominated by NH4NO3 (52%) in 2021. Receptor modelling identified major sources contributing to PM2.5: Mineral, road and desert dust (MRDD), Secondary sulphate (SECS), Secondary nitrate (SECN), Tungsten industry (W), Toxic Elements of Coal (TEC), Iron and Steel (IRONS), Coal Combustion (CC), Residential Heating (RH), Refinery (REF) and Traffic (TRF). In relative proportions, TEC (-83%), SECS (-64%) and SECN (-48%) reduced their contributions to PM2.5 whilst MRDD increased (+62.5%). Thus, the results indicate not only a drastic abatement of PM pollution in Wuhan but also a change in the sources of pollution, which requires further actions to reduce PM2.5 concentrations to health protective values. Secondary PM and fugitive emissions are key components to abate. |
author2 |
0000-0001-6593-5593 |
author_facet |
0000-0001-6593-5593 Canals-Angerri, Anna Lv, W. Zhuang, X. Shangguan, Y. Wang, Y. Kong, S. Hopke, P. K. Amato, Fulvio Alastuey, Andrés Van Drooge, Barend Querol, Xavier |
format |
artículo |
topic_facet |
Urban background Atmospheric particulate matter Geochemistry PM 2.5 Source apportionment Wuhan http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all |
author |
Canals-Angerri, Anna Lv, W. Zhuang, X. Shangguan, Y. Wang, Y. Kong, S. Hopke, P. K. Amato, Fulvio Alastuey, Andrés Van Drooge, Barend Querol, Xavier |
author_sort |
Canals-Angerri, Anna |
title |
Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
title_short |
Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
title_full |
Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
title_fullStr |
Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
title_full_unstemmed |
Evaluation of air quality changes in a Chinese megacity over a 15-year period (2006-2021) using PM2.5 receptor modelling |
title_sort |
evaluation of air quality changes in a chinese megacity over a 15-year period (2006-2021) using pm2.5 receptor modelling |
publisher |
Elsevier |
publishDate |
2023-10-25 |
url |
http://hdl.handle.net/10261/338577 https://api.elsevier.com/content/abstract/scopus_id/85175253353 |
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