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Chen Y, Ye X, Yao Y, Lv Z, Fu Z, Huang C, Wang R, Chen J. Characteristics and sources of PM 2.5-bound elements in Shanghai during autumn and winter of 2019: Insight into the development of pollution episodes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 881:163432. [PMID: 37059141 DOI: 10.1016/j.scitotenv.2023.163432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/24/2023] [Accepted: 04/07/2023] [Indexed: 06/01/2023]
Abstract
Elemental composition of PM2.5 dispersed in the atmosphere has received increasing attention due to its health effect and catalytic activities. In this study, the characteristics and source apportionment of PM2.5-bound elements were investigated using hourly measurements. K is the most abundant metal element, followed by Fe > Ca > Zn > Mn > Ba > Pb > Cu > Cd. With an average of 8.8 ± 4.1 ng m-3, Cd was the only element whose pollution level exceeded the limits of Chinese standards and WHO guidelines. The concentrations of As, Se, and Pb doubled in December compared to November, indicating a large increase in coal consumption in winter. The enrichment factors of As, Se, Hg, Zn, Cu, Cd, and Ag were larger than 100, indicating that anthropogenic activities greatly affected them. Ship emissions, coal combustion, soil dust, vehicle emissions, and industrial emissions were identified as major sources of trace elements. In November, the pollution from coal burning and industrial activities was significantly reduced, demonstrating the remarkable achievement of coordinated control measures. For the first time, hourly measurements of PM2.5-bound elements and secondary sulfate and nitrate were used to investigate the development of dust and PM2.5 events. During a dust storm event, secondary inorganic salts, potentially toxic elements, and crustal elements sequentially reached peak concentrations, indicating different source origins and formation mechanisms. During the winter PM2.5 event, the sustained increase of trace elements was attributed to the accumulation of local emissions, while regional transport was responsible for the explosive growth before the end of the event. This study highlights the important role of hourly measurement data in distinguishing local accumulation from regional and long-range transport.
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Affiliation(s)
- Yanan Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Xingnan Ye
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Institute of Eco-Chongming (IEC), Chongming District, Shanghai 202162, China.
| | - Yinghui Yao
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Zhixiao Lv
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Zhenghang Fu
- Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China
| | - Cheng Huang
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
| | - Ruoyan Wang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Jianmin Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Institute of Eco-Chongming (IEC), Chongming District, Shanghai 202162, China; Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China
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Zhou X, Xie M, Zhao M, Wang Y, Luo J, Lu S, Li J, Liu Q. Pollution characteristics and human health risks of PM 2.5-bound heavy metals: a 3-year observation in Suzhou, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023:10.1007/s10653-023-01568-x. [PMID: 37072576 PMCID: PMC10113128 DOI: 10.1007/s10653-023-01568-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/05/2023] [Indexed: 05/03/2023]
Abstract
This study aimed to analyze the temporal trends, pollution levels, and health risks associated with eleven PM2.5-bound heavy metals (Sb, Al, As, Hg, Cd, Cr, Mn, Ni, Pb, Se and Tl). A total of 504 PM2.5 samples were collected in Suzhou from January 2019 to December 2021. The pollution levels were estimated based on enrichment factors (EFs) which can be used to calculate the enrichment of heavy metals in PM2.5 and determine whether the concentrations of PM2.5-bound heavy metals are influenced by the crustal or anthropogenic sources, and the health risk of PM2.5-bound heavy metals via inhalation was assessed following US EPA's Risk Assessment Guidance for Superfund (RAGS). The annual average concentration of PM2.5 was 46.76 μg m-3, which was higher than the WHO recommended limit of 5 μg m-3. The average of the sum of eleven PM2.5-bound heavy metals was 180.61 ng m-3, dominated by Al, Mn, and Pb. The concentration of PM2.5 in 2020 was significantly lower than that in 2019 and 2021. The PM2.5 and PM2.5-bound heavy metal concentrations in winter and spring were significantly higher than those in autumn and summer. The EF of As, Cr, Cd, Hg, Ni, Pb, Sb, Mn, Se, and Tl was higher than 10, indicating they were mainly from anthropogenic sources. Exposure to a single non-carcinogenic heavy metal via inhalation was unlikely to cause non-carcinogenic effects (HQ < 1), but the integrated non-carcinogenic risks should be taken seriously (HI > 1). The cumulative carcinogenic risks from the carcinogenic elements were exceeding the lower limit (1 × 10-6) of the acceptable risk range. The carcinogenic risks of As and Cr(VI) contributed 60.98% and 26.77%, respectively, which were regarded as two key carcinogenic risk factors. Overall, the government policies and countermeasures for the PM2.5 pollution control should be performed not only based on the PM2.5 concentration but also based on the PM2.5-bound heavy metals and their health risks for the local residents.
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Affiliation(s)
- Xiaolong Zhou
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Mengmeng Xie
- Department of Clinical Nutrition, Suzhou Ninth People's Hospital, Suzhou, China
| | - Minxian Zhao
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Ying Wang
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Jia Luo
- Physical and Chemical Laboratory, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Songwen Lu
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Jie Li
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Qiang Liu
- Department of Environmental Hygiene, Suzhou Center for Disease Control and Prevention, Suzhou, China.
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Yu P, Han Y, Wang M, Zhu Z, Tong Z, Shao X, Peng J, Hamid Y, Yang X, Deng Y, Huang Y. Heavy metal content and health risk assessment of atmospheric particles in China: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161556. [PMID: 36640888 DOI: 10.1016/j.scitotenv.2023.161556] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/10/2022] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
In recent decades, China has devoted significant attention to the heavy metals pollution in particulate matter. However, the majority of studies have only focused on the field monitoring in relatively remote areas, which may not be representative of air quality across the country. This study reevaluated the characteristics, temporal and spatial changes, and health concerns associated with heavy metal pollution in atmospheric particulates on a national scale by coupling Meta-analysis and Monte Carlo simulation analysis. In terms of spatial distribution, the heavy metals pollution levels in the northern coast and northeastern regions are relatively high, whereas it is low along the middle Yellow River, middle Yangtze River, as well as Southwest. With the exception of Cu, the distribution of all elements in PM2.5 steadily decreased over time Moreover, PM10 and PM2.5 performed similar where Cd and Ni both first increased followed by a decline while, Cr displayed a decrease before it showed an increment. And since the implementation of prevention and control policies about the atmospheric release, the focus of industrial emission has gradually shifted from energy production and processing to living products manufacturing. Moreover, the carcinogenic risk was shown to be Cr > As, Pb > Ni, Cd, while the non-carcinogenic risk was as follows: As, Ni > Cr, Cd. Among all contaminants, Cd, As, and Cr in PM2.5 and PM10 exceeded the WHO standard in the cities with worst air quality. It was observed that As posed the largest non-carcinogenic risk to adults while, Cr caused the most carcinogenic risk to adults and children, where the carcinogenic risk of children remains higher than that of adults. Therefore, the findings of this study may offer data support to the China's heavy metal pollution standards in airborne particles and offer theoretical data support for pollution management.
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Affiliation(s)
- Pengyue Yu
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Yongliang Han
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Maodi Wang
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Zhen Zhu
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Zhenglong Tong
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - XingYuan Shao
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Jianwei Peng
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Yasir Hamid
- Ministry of Education (MOE) Key Lab of Environ. Remediation and Ecol. Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou 310058, China
| | - Xiaoe Yang
- Ministry of Education (MOE) Key Lab of Environ. Remediation and Ecol. Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou 310058, China
| | - Yaocheng Deng
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
| | - Ying Huang
- National Engineering Laboratory of High Efficient Use on Soil and Fertilizer, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
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