Md. Arfan Ali, Mazen E. Assiri, Muhammad Bilal, Salman Tariq, Gerrit de Leeuw, M. Nazrul Islam, Yu Wang, Lama Alamri, Ayman S. Ghulam, Shamsuddin Shahid
{"title":"孟加拉国长期PM2.5暴露:确定污染热点、趋势、来源和健康风险评估","authors":"Md. Arfan Ali, Mazen E. Assiri, Muhammad Bilal, Salman Tariq, Gerrit de Leeuw, M. Nazrul Islam, Yu Wang, Lama Alamri, Ayman S. Ghulam, Shamsuddin Shahid","doi":"10.1007/s11869-025-01768-7","DOIUrl":null,"url":null,"abstract":"<div><p>Fine particulate matter (PM<sub>2.5</sub>) represents a significant global challenge due to its severe effects on human health, climate, and the environment, and is identified as the leading cause of premature mortality and morbidity worldwide. The limited availability and distribution of ground-based measurements hinder long-term studies on the impacts of air pollution in Bangladesh. Therefore, in this study, global estimates of monthly PM2.5 developed by Washington University were used to analyze the spatiotemporal distribution and variability of PM2.5, trends, health risk (HR), control zones, and potential source contribution function (PSCF) in Bangladesh from 2001 to 2020. The 20-year average spatial distribution shows PM<sub>2.5</sub> hotspots across Bangladesh, particularly in the urban areas of Dhaka, Mymensingh, Chittagong, Barisal, Khulna, Rajshahi, and Rangpur, with higher pollution in the winter than in other seasons. In winter, PM<sub>2.5</sub> ranged from 55.12 to 159.42 µg/m<sup>3</sup> across 64 cities in Bangladesh, which is 11 to 32 times higher than the World Health Organization Air Quality Standards (WHOAQS; annual mean: ≤ 5 µg/m<sup>3</sup>) and 4 to 11 times higher than the Bangladesh National Ambient Air Quality Standards (BNAAQS; annual mean: ≤ 15 µg/m<sup>3</sup>). Moreover, PM₂.₅ levels significantly increased in 63 cities across Bangladesh, with rates ranging from 0.54 to 1.38 µg/m³/year between 2000 and 2020. PM₂.₅ components in Bangladesh show an increasing trend for Sea Salt (SS), Organic Carbon (OC), Sulfate (SO₄), Black Carbon (BC), and Nitrate, except for Dust, which exhibits a negligible decreasing trend. Weather conditions, industrial emissions, vehicle exhaust, and biomass burning significantly influence PM₂.₅ concentrations. The HR assessment showed that the percentage of extremely high-risk areas in Bangladesh rose significantly from 14.57 to 39.29% between 2001 and 2020. Finally, PSCF analysis shows that air quality in Bangladesh is mainly affected by external sources of PM<sub>2.5</sub> originating from the Indo-Gangetic Plain (IGB), India, Nepal, Bay of Bengal, Sri Lanka, Gulf of Mannar, Arabian Sea, and Laccadive Sea, with the strongest impact in the winter, followed by spring, autumn, and summer. It is recommended that policymakers utilize the findings of this study to implement targeted strategies for reducing PM<sub>2.5</sub> concentrations and improving air quality across Bangladesh.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 8","pages":"2229 - 2246"},"PeriodicalIF":2.9000,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Long-term PM2.5 exposure in Bangladesh: identification of pollution hotspots, trends, sources and health risk assessment\",\"authors\":\"Md. Arfan Ali, Mazen E. Assiri, Muhammad Bilal, Salman Tariq, Gerrit de Leeuw, M. Nazrul Islam, Yu Wang, Lama Alamri, Ayman S. Ghulam, Shamsuddin Shahid\",\"doi\":\"10.1007/s11869-025-01768-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Fine particulate matter (PM<sub>2.5</sub>) represents a significant global challenge due to its severe effects on human health, climate, and the environment, and is identified as the leading cause of premature mortality and morbidity worldwide. The limited availability and distribution of ground-based measurements hinder long-term studies on the impacts of air pollution in Bangladesh. Therefore, in this study, global estimates of monthly PM2.5 developed by Washington University were used to analyze the spatiotemporal distribution and variability of PM2.5, trends, health risk (HR), control zones, and potential source contribution function (PSCF) in Bangladesh from 2001 to 2020. The 20-year average spatial distribution shows PM<sub>2.5</sub> hotspots across Bangladesh, particularly in the urban areas of Dhaka, Mymensingh, Chittagong, Barisal, Khulna, Rajshahi, and Rangpur, with higher pollution in the winter than in other seasons. In winter, PM<sub>2.5</sub> ranged from 55.12 to 159.42 µg/m<sup>3</sup> across 64 cities in Bangladesh, which is 11 to 32 times higher than the World Health Organization Air Quality Standards (WHOAQS; annual mean: ≤ 5 µg/m<sup>3</sup>) and 4 to 11 times higher than the Bangladesh National Ambient Air Quality Standards (BNAAQS; annual mean: ≤ 15 µg/m<sup>3</sup>). Moreover, PM₂.₅ levels significantly increased in 63 cities across Bangladesh, with rates ranging from 0.54 to 1.38 µg/m³/year between 2000 and 2020. PM₂.₅ components in Bangladesh show an increasing trend for Sea Salt (SS), Organic Carbon (OC), Sulfate (SO₄), Black Carbon (BC), and Nitrate, except for Dust, which exhibits a negligible decreasing trend. 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Long-term PM2.5 exposure in Bangladesh: identification of pollution hotspots, trends, sources and health risk assessment
Fine particulate matter (PM2.5) represents a significant global challenge due to its severe effects on human health, climate, and the environment, and is identified as the leading cause of premature mortality and morbidity worldwide. The limited availability and distribution of ground-based measurements hinder long-term studies on the impacts of air pollution in Bangladesh. Therefore, in this study, global estimates of monthly PM2.5 developed by Washington University were used to analyze the spatiotemporal distribution and variability of PM2.5, trends, health risk (HR), control zones, and potential source contribution function (PSCF) in Bangladesh from 2001 to 2020. The 20-year average spatial distribution shows PM2.5 hotspots across Bangladesh, particularly in the urban areas of Dhaka, Mymensingh, Chittagong, Barisal, Khulna, Rajshahi, and Rangpur, with higher pollution in the winter than in other seasons. In winter, PM2.5 ranged from 55.12 to 159.42 µg/m3 across 64 cities in Bangladesh, which is 11 to 32 times higher than the World Health Organization Air Quality Standards (WHOAQS; annual mean: ≤ 5 µg/m3) and 4 to 11 times higher than the Bangladesh National Ambient Air Quality Standards (BNAAQS; annual mean: ≤ 15 µg/m3). Moreover, PM₂.₅ levels significantly increased in 63 cities across Bangladesh, with rates ranging from 0.54 to 1.38 µg/m³/year between 2000 and 2020. PM₂.₅ components in Bangladesh show an increasing trend for Sea Salt (SS), Organic Carbon (OC), Sulfate (SO₄), Black Carbon (BC), and Nitrate, except for Dust, which exhibits a negligible decreasing trend. Weather conditions, industrial emissions, vehicle exhaust, and biomass burning significantly influence PM₂.₅ concentrations. The HR assessment showed that the percentage of extremely high-risk areas in Bangladesh rose significantly from 14.57 to 39.29% between 2001 and 2020. Finally, PSCF analysis shows that air quality in Bangladesh is mainly affected by external sources of PM2.5 originating from the Indo-Gangetic Plain (IGB), India, Nepal, Bay of Bengal, Sri Lanka, Gulf of Mannar, Arabian Sea, and Laccadive Sea, with the strongest impact in the winter, followed by spring, autumn, and summer. It is recommended that policymakers utilize the findings of this study to implement targeted strategies for reducing PM2.5 concentrations and improving air quality across Bangladesh.
期刊介绍:
Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health.
It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes.
International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals.
Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements.
This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.