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Shao H, Wang Q, Wang L, Lei X, Dai S, Li T, Zhu X, Mao XZ. Source identification of microplastics in highly urbanized river environments and its implications for watershed management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175308. [PMID: 39117198 DOI: 10.1016/j.scitotenv.2024.175308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/10/2024] [Accepted: 08/04/2024] [Indexed: 08/10/2024]
Abstract
The extensive use of plastic products has resulted in a significant influx of microplastics into aquatic ecosystems, particularly in highly urbanized areas and their associated river environments. However, the specific pathways and quantities through which these microplastics enter the river environment are still unclear, which poses a challenge in developing effective measures to mitigate their sources. In this paper, the spatiotemporal variations of microplastics from different sources in highly urbanized rivers within the Shenzhen Bay watershed were investigated through field sampling, experimental and statistical analysis, and the measures of microplastic reduction were discussed. The observation results exhibited a negative logarithmic correlation between the abundance of microplastics in river water and monthly rainfall (R = 0.994, MSE = 0.051, p < 0.05). When the monthly rainfall was <6 mm, the abundance of microplastics was absolutely dependent on point sources. While the rainfall exceeded 470 mm, the abundance was absolutely predominantly influenced by nonpoint source microplastics. The annual load of microplastics from the watershed was 5.39 × 1012 items, of which 61.6 % originated from point sources. Among the microplastics from point sources, 92.1 % were derived from fibers generated by textile washing. Fragmented microplastics (41.9 %) were the most common type of microplastics from nonpoint sources, primarily originating from the disintegration and weathering of disposable plastics. In the future, there is an expectation to reduce the microplastic load in the watershed to 15.9 % of the total by improving sewage treatment processes and infrastructure. This study can provide scientific guidance for environmental planning and serve as a warning regarding the impact of microplastics on ecosystems in urbanized areas.
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Affiliation(s)
- Huaihao Shao
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | - Qiankun Wang
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | - Linlin Wang
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | - Xiaoyu Lei
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | - Shuangliang Dai
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | - Tian Li
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China
| | | | - Xian-Zhong Mao
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, PR China.
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Lee JY, Chia RW, Veerasingam S, Uddin S, Jeon WH, Moon HS, Cha J, Lee J. A comprehensive review of urban microplastic pollution sources, environment and human health impacts, and regulatory efforts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174297. [PMID: 38945237 DOI: 10.1016/j.scitotenv.2024.174297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 07/02/2024]
Abstract
Microplastic (MP) pollution in urban environments is a pervasive and complex problem with significant environmental and human health implications. Although studies have been conducted on MP pollution in urban environments, there are still research gaps in understanding the exact sources, regulation, and impact of urban MP on the environment and public health. Therefore, the goal of this study is to provide a comprehensive overview of the complex pathways, harmful effects, and regulatory efforts of urban MP pollution. It discusses the research challenges and suggests future directions for addressing MPs related to environmental issues in urban settings. In this study, original research papers published from 2010 to 2024 across ten database categories, including PubMed, Google Scholar, Scopus, and Web of Science, were selected and reviewed to improve our understanding of urban MP pollution. The analysis revealed multifaceted sources of MPs, including surface runoff, wastewater discharge, atmospheric deposition, and biological interactions, which contribute to the contamination of aquatic and terrestrial ecosystems. MPs pose a threat to marine and terrestrial life, freshwater organisms, soil health, plant communities, and human health through ingestion, inhalation, and dermal exposure. Current regulatory measures for MP pollution include improved waste management, upgraded wastewater treatment, stormwater management, product innovation, public awareness campaigns, and community engagement. Despite these regulatory measures, several challenges such as; the absence of standardized MPs testing methods, MPs enter into the environment through a multitude of sources and pathways, countries struggle in balancing trade interests with environmental concerns have hindered effective policy implementation and enforcement. Addressing MP pollution in urban environments is essential for preserving ecosystems, safeguarding public health, and advancing sustainable development. Interdisciplinary collaboration, innovative research, stringent regulations, and public participation are vital for mitigating this critical issue and ensuring a cleaner and healthier future for urban environments and the planet.
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Affiliation(s)
- Jin-Yong Lee
- Department of Geology, Kangwon National University, Chuncheon 24341, Republic of Korea.
| | - Rogers Wainkwa Chia
- Department of Geology, Kangwon National University, Chuncheon 24341, Republic of Korea; Research Institute for Earth Resources, Kangwon National University, Chuncheon 24341, Republic of Korea.
| | - S Veerasingam
- Environmental Science Center, Qatar University, Doha, P.O. Box 2713, Qatar
| | - Saif Uddin
- Environment and Life Sciences Research Centre, Kuwait Institute for Scientific Research, Safat 13109, Kuwait
| | - Woo-Hyun Jeon
- Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
| | - Hee Sun Moon
- Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
| | - Jihye Cha
- Department of Geology, Kangwon National University, Chuncheon 24341, Republic of Korea; School of Science and Engineering, University of Missouri, Kansas City, MO 64110, USA
| | - Jejung Lee
- School of Science and Engineering, University of Missouri, Kansas City, MO 64110, USA
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Liu Z, Bai Y, Zhao X, Liu X, Wei H, Wei M, Ma Y. Contributions from typical sources to microplastics in surface water of a semiarid urban river. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135570. [PMID: 39173368 DOI: 10.1016/j.jhazmat.2024.135570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/15/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024]
Abstract
Urban regions are suggested to be the main source of microplastic pollution in rivers. Thus, we investigated the spatiotemporal distribution of microplastics in the surface water of the Lanzhou section of the Yellow River in a semiarid region and the contributions of typical sources. The average concentration of microplastics in the surface water of the river was 0.98 particles (p) L-1. The daily quantity flux and mass flux were 3.63 × 109 p d-1 and 95.38 kg d-1, respectively. Most of the microplastics in the river were fibers and fragments, composed of polyethylene terephthalate, polyamide, polypropylene and polyethylene. A large quantity and mass of microplastics were found in the high-flow period of the river. The hotspots of microplastic pollution were residential and tourist reaches. The spatial distribution of microplastics was influenced by anthropogenic factors. However, the main factor influencing the temporal distribution of microplastics was precipitation seasonality. Most of the microplastics in the surface water originated from drainage ditches. The direct contribution of microplastics from atmospheric deposition was also considerable. Our results suggest that the contribution of microplastics from atmospheric deposition to urban rivers is worthy of attention.
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Affiliation(s)
- Zheng Liu
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China.
| | - Ying Bai
- Northwest Branch of China Academy of Environmental Sciences, Lanzhou 730000, China; Gansu Academy of Eco-environmental Sciences, Lanzhou 730000, China
| | - Xiaojiong Zhao
- Northwest Branch of China Academy of Environmental Sciences, Lanzhou 730000, China; Gansu Academy of Eco-environmental Sciences, Lanzhou 730000, China
| | - Xianyu Liu
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China
| | - Huijuan Wei
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China
| | - Mingxia Wei
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China
| | - Yang Ma
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China
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4
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Liu D, Yang Z, Gong Y, Song D, Chen Y. Occurrence and emission characteristics of microplastics in agricultural surface runoff under different natural rainfall and short-term fertilizer application. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135254. [PMID: 39038379 DOI: 10.1016/j.jhazmat.2024.135254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 07/12/2024] [Accepted: 07/17/2024] [Indexed: 07/24/2024]
Abstract
Land-based microplastics (MPs) are considered the primary source of MPs in aquatic environments, with runoff being a major pathway for their transfer from soil to surface water. However, the transportation characteristics of MPs via agricultural surface runoff remain unclear. In this study, we investigated the occurrence and emission characteristics of MPs in agricultural surface runoff under various short-term fertilizer applications and natural rainfall events using laser direct infrared imaging analysis (LDIR). MPs from fertilizers and soils co-migrated with the agricultural runoff. The abundance and concentration of MPs in runoff were 145.90 ± 22.48-2043.38 ± 89.51 items·L-1 and 39.17 ± 21.94-523.04 ± 47.85 µg·L-1, respectively. Small and low-density MPs, such as polyethylene (PE), chlorinated polyethylene (CPE), and polyurethane (PU) in film/fragment form with 20-50 µm exhibited a higher mobility. No statistical differences were observed in the distribution of runoff MPs with the application of different fertilizers. There was a significant positive relationship between runoff MP abundance and rainfall intensity. The annual emission load in this study area was 116.73 g·hm-2, indicating that the transportation of MPs via agricultural surface runoff cannot be ignored. This study is conducive to understanding the migration behavior of MPs in soil-water environments in a better manner.
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Affiliation(s)
- Dengping Liu
- College of Resources and Environment, Southwest University, Chongqing 400715, China; Chongqing Engineering Research Center of Rural Cleaning, Chongqing 400715, China
| | - Zhimin Yang
- College of Resources and Environment, Southwest University, Chongqing 400715, China; Chongqing Engineering Research Center of Rural Cleaning, Chongqing 400715, China
| | - Yang Gong
- College of Resources and Environment, Southwest University, Chongqing 400715, China; Chongqing Engineering Research Center of Rural Cleaning, Chongqing 400715, China
| | - Dan Song
- Chongqing Academe of Eco-Environmental Science, Chongqing 401147, China
| | - Yucheng Chen
- College of Resources and Environment, Southwest University, Chongqing 400715, China; Chongqing Engineering Research Center of Rural Cleaning, Chongqing 400715, China.
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5
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Zhao B, Richardson RE, You F. Microplastics monitoring in freshwater systems: A review of global efforts, knowledge gaps, and research priorities. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135329. [PMID: 39088945 DOI: 10.1016/j.jhazmat.2024.135329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/11/2024] [Accepted: 07/24/2024] [Indexed: 08/03/2024]
Abstract
The escalating production of synthetic plastics and inadequate waste management have led to pervasive microplastic (MP) contamination in aquatic ecosystems. MPs, typically defined as particles smaller than 5 mm, have become an emerging pollutant in freshwater environments. While significant concern about MPs has risen since 2014, research has predominantly concentrated on marine settings, there is an urgent need for a more in-depth critical review to systematically summarize the current global efforts, knowledge gaps, and research priorities for MP monitoring in freshwater systems. This review evaluates the current understanding of MP monitoring in freshwater environments by examining the distribution, characteristics, and sources of MPs, alongside the progression of analytical methods with quantitative evidence. Our findings suggest that MPs are widely distributed in global freshwater systems, with higher abundances found in areas with intense human economic activities, such as the United States, Europe, and China. MP abundance distributions vary across different water bodies (e.g., rivers, lakes, estuaries, and wetlands), with sampling methods and size range selections significantly influencing reported MP abundances. Despite great global efforts, there is still a lack of harmonized analyzing framework and understanding of MP pollution in specific regions and facilities. Future research should prioritize the development of standardized analysis protocols and open-source MP datasets to facilitate data comparison. Additionally, exploring the potential of state-of-the-art artificial intelligence for rapid, accurate, and large-scale modeling and characterization of MPs is crucial to inform effective strategies for managing MP pollution in freshwater ecosystems.
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Affiliation(s)
- Bu Zhao
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Ruth E Richardson
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Fengqi You
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; Systems Engineering, Cornell University, Ithaca, NY 14853, USA.
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6
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Xie X, Wang K, Shen X, Li X, Wang S, Yuan S, Li B, Wang Z. Potential mechanisms of aortic medial degeneration promoted by co-exposure to microplastics and lead. JOURNAL OF HAZARDOUS MATERIALS 2024; 475:134854. [PMID: 38889468 DOI: 10.1016/j.jhazmat.2024.134854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/20/2024]
Abstract
Microplastics (MPs) have attracted widespread attention because they can lead to combined toxicity by adsorbing heavy metals from the environment. Exposure to lead (Pb), a frequently adsorbed heavy metal by MPs, is common. In the current study, the coexistence of MPs and Pb was assessed in human samples. Then, mice were used as models to examine how co-exposure to MPs and Pb promotes aortic medial degeneration. The results showed that MPs and Pb co-exposure were detected in patients with aortic disease. In mice, MPs and Pb co-exposure promoted the damage of elastic fibers, loss of vascular smooth muscle cells (VSMCs), and release of inflammatory factors. In vitro cell models revealed that co-exposure to MPs and Pb induced excessive reactive oxygen species generation, impaired mitochondrial function, and triggered PANoptosome assembly in VSMCs. These events led to PANoptosis and inflammation through the cAMP/PKA-ROS signaling pathway. However, the use of the PKA activator 8-Br-cAMP or mitochondrial ROS scavenger Mito-TEMPO improved, mitochondrial function in VSMCs, reduced cell death, and inhibited inflammatory factor release. Taken together, the present study provided novel insights into the combined toxicity of MPs and Pb co-exposure on the aorta.
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Affiliation(s)
- Xiaoping Xie
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Kexin Wang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Xiaoyan Shen
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Xu Li
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Su Wang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Shun Yuan
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China
| | - Bowen Li
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China.
| | - Zhiwei Wang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 99# Zhangzhidong Road, Wuhan 430000, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, 9# Zhangzhidong Road, Wuhan 430000, Hubei Province, China.
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7
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Xie M, Lv M, Zhao Z, Li L, Jiang H, Yu Y, Zhang X, Liu P, Chen J. New insights of bacterial and eukaryotic phenotypes on the plastics collected from the typical natural habitat of the endangered crocodile lizard. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116541. [PMID: 38848637 DOI: 10.1016/j.ecoenv.2024.116541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/29/2024] [Accepted: 05/31/2024] [Indexed: 06/09/2024]
Abstract
Although accumulating evidence indicates that endangered animals suffer from plastic pollution, this has been largely overlooked. Here, we explored the bacteria and eukaryotes living in the plastics gathered from the natural habitat of the highly endangered crocodile lizard. The results demonstrated that the bacterial and eukaryotic communities on plastics formed a unique ecosystem that exhibited lower diversity than those in the surrounding water and soil. However, microbes displayed a more complex and stable network on plastic than that in water or soil, implying unique mechanisms of stabilization. These mechanisms enhanced their resilience and contributed to the provision of stable ecological services. Eukaryotes formed a simpler and smaller network than bacteria, indicating different survival strategies. The bacteria residing on the plastics played a significant role in carbon transformation and sequestration, which likely impacted carbon cycling in the habitat. Furthermore, microbial exchange between plastics and the crocodile lizard was observed, suggesting that plastisphere serves as a mobile gene bank for the exchange of information, including potentially harmful substances. Overall, microbes on plastic appear to significantly impact the crocodile lizard and its natural habitat via various pathways. These results provided novel insights into risks evaluation of plastic pollution and valuable guidance for government efforts in plastic pollutant control in nature reserves.
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Affiliation(s)
- Mujiao Xie
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Mei Lv
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Zhiwen Zhao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Linmiao Li
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Haiying Jiang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Yepin Yu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Xiujuan Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Ping Liu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Jinping Chen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China.
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Feizi F, Akhbarizadeh R, Hamidian AH. Microplastics in urban water systems, Tehran Metropolitan, Iran. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:643. [PMID: 38904869 DOI: 10.1007/s10661-024-12815-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024]
Abstract
Urban water systems are potential sources of secondary microplastics (MPs) as well as a distributor of MPs in the environment. In the present study, the presence of MPs in the urban water systems of the Tehran Metropolitan (Capital of Iran) was investigated. In addition, the probable relationship of MPs with different land uses (i.e., residential-commercial, forest, military, and highway) was assessed. The results showed that all parts of Tehran's urban water system in the study area were contaminated with MPs (107.1 ± 39, 37.8 ± 10.5, 48.3 ± 3.1, 46.9 ± 5.6, 59.4 ± 26.5, 1.7, 2.0 ± 0.6, 7.9 ± 1, 1.8 ± 0.2 particles/liter at the residential, integrated, military, forest, highway runoffs, drinking water, groundwater, seasonal river, and the effluent of the wastewater treatment plants; respectively). However, significant differences were found between different land uses. As expected, the residential runoff had the highest rate of MPs pollution, with 107.1 ± 39 particles/liter. According to the obtained results and our estimation, more than five million MPs/day can enter into the water bodies and soil of the study area through the wastewater treatment plants. While there are significant differences in MPs in the different land uses, our findings suggest that residential areas and highways need further attention in controlling the spread of MPs in urban areas.
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Affiliation(s)
- Farzaneh Feizi
- Department of Environmental Science and Engineering, Faculty of Natural Resources, University of Tehran, P.O. Box 4314, Karaj, 31587-77878, Iran
| | | | - Amir Hossein Hamidian
- Department of Environmental Science and Engineering, Faculty of Natural Resources, University of Tehran, P.O. Box 4314, Karaj, 31587-77878, Iran.
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Jiang Y, Yang Y, Zhan C, Cheng B. Impacts of rainfall and lakeshore soil properties on microplastics in inland freshwater: A case study in Donghu Lake, China. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:891-901. [PMID: 38591146 DOI: 10.1039/d3em00500c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Microplastic (MP) pollution has garnered global attention in recent years. Although anthropogenic factors have been extensively studied for their impacts on MP pollution, there is still a lack of research on the relationship between non-anthropogenic factors and MP occurrence in inland freshwater. This study investigated MP pollution in Donghu Lake, the largest urban freshwater lake in China, to examine the effects of rainfall and lakeshore soil properties on MP pollution. The MP abundance in the surface water of Donghu Lake was 5.84 ± 2.95 items per L under the equilibrium state. However, during and after rainfall, the MP abundances significantly increased to 8.27 ± 5.65 items per L and 7.60 ± 4.04 items per L, respectively (p < 0.05). This increase could be attributed to an increase in the amount of MPs transported to the lake via atmospheric deposition and rainfall runoff, as well as the re-suspension of MP debris in sediment during stronger hydrodynamics. A statistically significant negative correlation was observed between MP abundance and lakeshore soil particle size. It suggested that a high proportion of large-sized soil particles created large pores that enabled MPs to be deposited in the surface layer of soil to migrate to deeper layers. As a result, the amount of MPs in the surface soil and transported to the lake via surface runoff was low. It is of practical significance to understand the sources and distribution impact factors of MPs in urban lakes. The fate and effects of MPs retained in the inland freshwater environments should receive more attention.
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Affiliation(s)
- Yan Jiang
- Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province, Central China Normal University, Wuhan 430079, China.
| | - Yinuo Yang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Chenxi Zhan
- Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province, Central China Normal University, Wuhan 430079, China.
| | - Bo Cheng
- Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province, Central China Normal University, Wuhan 430079, China.
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10
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Fan R, Li B, Liu Q, Liu Q, Cui J, Bai R, Wang Y, Elias R, Li C, He W. Comparative evaluation of soil accumulation of light stabilizers from biodegradable mulching films versus conventional polyethylene ones. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133302. [PMID: 38141305 DOI: 10.1016/j.jhazmat.2023.133302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/08/2023] [Accepted: 12/15/2023] [Indexed: 12/25/2023]
Abstract
Light stabilizers are commonly used as additives in mulching films and have environmental persistence, bioaccumulation and ecotoxicity. However, their occurrence and distribution in mulching films and accumulation in mulched soils are seldom reported. This study firstly presents a comprehensive screening of 19 light stabilizers in 65 mulching films and 30 farmland soils collected in China, of which five and eight light stabilizers were 100% detected, respectively. The light stabilizer concentration in biodegradable mulching films was significantly higher than that in polyethylene ones, with median concentrations of 1.75 × 106 μg/kg and 4.86 × 103 μg/kg, respectively. Furthermore, a positive correlation was observed between the light stabilizer concentration in mulching films and in soils. This indicates that mulching films play a critical role in the accumulation of light stabilizers in farmland soils, and biodegradable mulching films significantly increase benzotriazole light stabilizers in soils. Although the light stabilizer concentration in farmland soil is relatively low, the sustainable quantities of mulching film input and the long-term accumulation will still pose a threat to the ecological environment and organism health. Consequently, our work reveals the occurrence and environmental risk of light stabilizers in mulching films and farmland soils and brings attention to light stabilizers in the soil environment.
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Affiliation(s)
- Ruiqi Fan
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Bingru Li
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Qi Liu
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Qiuyun Liu
- The BioComposites Centre, Bangor University, Bangor LL57 2UW, UK
| | - Jixiao Cui
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, Xinjiang, China
| | - Runhao Bai
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yang Wang
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Robert Elias
- The BioComposites Centre, Bangor University, Bangor LL57 2UW, UK
| | - Cheng Li
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Wenqing He
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, Xinjiang, China.
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Niu S, Liu C, Yang C, Liu H. Microplastic pollution in urban stormwater inlet sediments influenced by land use type of runoff drainage area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:170003. [PMID: 38218469 DOI: 10.1016/j.scitotenv.2024.170003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Since the urban stormwater inlet (USI) acts as a link in the migration of microplastics (MPs) in stormwater, sufficient information on MPs in USI sediments is very important for understanding urban diffuse microplastic pollution. In this study, the abundance and characteristics of MPs in the USI sediments of Ma'anshan City, China, were analyzed based on urban land use type. MPs were prevalent in the USI sediments, with the average abundances of 536.77 ± 313.92 items·kg-1 for commercial areas, 505.64 ± 400.82 items·kg-1 for campuses, 694.71 ± 219.95 items·kg-1 for industrial areas, 526.41 ± 152.34 items·kg-1 for residential areas, and 1107.75 ± 422.10 items·kg-1 for main roads, indicating a high microplastic pollution in the USI sediments from main roads. The microplastic polymers were mainly polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and polystyrene (PS), accounting for 46.75 %-100.00 %, with PP MPs being the most abundant. Fiber MPs had the highest proportion in USI sediments from both campuses (35.30 %) and industrial areas (38.19 %), while film MPs were the most abundant for both commercial areas (39.91 %) and residential areas (35.65 %). The average proportions of fiber (27.29 %), fragment (29.18 %), and film (28.68 %) were almost equal for main roads, unlike other land use types. Except for campuses, transparent MPs were the most common for all land use types, with average proportions of 29.60 %-42.70 %. The proportions of MPs with sizes of <1000 μm were 72.54 % for commercial areas, 77.11 % for campuses, 76.05 % for industrial areas, 70.76 % for residential areas, and 74.29 % for main roads, respectively, with a consistent result with previous study that the MPs of <1000 μm are the predominant in the environment. This study enriches the knowledge of microplastic pollution in USI sediments and will benefit the mitigation of diffuse microplastic pollution.
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Affiliation(s)
- Siping Niu
- Department of Environmental Science and Engineering, School of Energy and Environment, Anhui University of Technology, Ma'anshan 243002, People's Republic of China.
| | - Chaoge Liu
- Department of Environmental Science and Engineering, School of Energy and Environment, Anhui University of Technology, Ma'anshan 243002, People's Republic of China
| | - Cuihe Yang
- Department of Environmental Science and Engineering, School of Energy and Environment, Anhui University of Technology, Ma'anshan 243002, People's Republic of China
| | - Hui Liu
- Department of Environmental Science and Engineering, School of Energy and Environment, Anhui University of Technology, Ma'anshan 243002, People's Republic of China.
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Peng M, Wu Q, Gao S, Liu Y, Zeng J, Ruan Y. Distribution and characteristics of microplastics in an urban river: The response to urban waste management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166638. [PMID: 37657545 DOI: 10.1016/j.scitotenv.2023.166638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 09/03/2023]
Abstract
The rivers have been proven to be potential sources and the major transport pathways of microplastic (MP) in natural aquatic eco-systems, yet there is an absence of understanding the provenances and distribution dynamics of MP in fluvial water body of urban regions. The present investigation aimed to characterize the distribution and accumulation of MPs in both surface water and riverine bed sediments in a typical urban river (Nanming River, southwest China), during the dry and wet seasons of 2021. MP were detected throughout the entire sample set, with average surface water abundances of 750 ± 53 n/m3 and 693.3 ± 40 n/m3 in dry and wet seasons, respectively, and 2250 ± 496.7 n/kg (dw) in surface sediments. Furthermore, the composition of 25 polymer types MPs were analyzed. The sediment of the Nanming River is a sink for MPs, recording their long-term accumulation. Multivariate statistical analysis-based results indicated that urban littering and agricultural input were the major contributors of non-point MP in the Nanming River, while the discharged effluent was another factor influencing the distribution of MPs in urban fluvial system. The average abundance of MPs was negatively correlated with purchase power parity (PPP), demonstrating that the poorly waste management results in a higher abundance of MPs in municipal river systems. The present study systematically characterized the distribution of MPs in medium-sized urban rivers systems in Southwest China. These findings can inform policy and management decisions to reduce MPs pollution in urban rivers and protect aquatic ecosystems.
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Affiliation(s)
- Meixue Peng
- Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Qixin Wu
- Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China; College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550000, China.
| | - Shilin Gao
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550000, China
| | - Yongxue Liu
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550000, China
| | - Jie Zeng
- Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China; College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550000, China
| | - Yunjun Ruan
- Institute of Advanced Optoelectronic Materials and Technology, College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China
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Rathinamoorthy R, Raja Balasaraswathi S, Madhubashini S, Prakalya A, Rakshana JB, Shathvika S. Investigation on microfiber release from elastane blended fabrics and its environmental significance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166553. [PMID: 37633399 DOI: 10.1016/j.scitotenv.2023.166553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Elastane blended apparel is one of the most preferred items by consumers with fashion interest due to its enhanced comfort and fit. The environmental impact and microfiber release due to elastane usage is often ignored due to its lower percentage in apparel. To address such a gap, this study aimed to quantify and characterize the microfiber release behavior of cotton/elastane knitted fabric. Cotton/Elastane blended knitted fabrics with three different proportions of Cotton/Elastane (98/2, 95/5, and 92/8) were considered for this analysis. Upon laundry and quantification, the results of the study showed that 98/2 Cotton/Elastane fabric released 21.04 ± 12.46 microfibers/sq.cm, whereas, 92/8 Cotton/Elastane fabric released 46.56 ± 6.21 microfibers/sq.cm. An increase in elastane proportion increased the overall emission of microfibers per unit area of fabric. The results also showed a higher contribution of elastane fibers in the total microfibers released. 13.40% of the total fibers released were elastane microfibers in the case of 98/2 Cotton/Elastane fabric, whereas, 92/8 Cotton/Elastane fabric released 19.60% of elastane microfibers. The elastane percentage of the fabric showed a significant positive correlation with total microfiber emission (r = 63%) and elastane microfiber emission (r = 62%). Repeated laundering results showed an overall reduction in microfiber emissions in subsequent washes. However, interestingly, an increase in the wash cycle increased the proportion of elastane microfibers in the total microfibers released. 92/8 Cotton/Elastane fabric released 20% of elastane microfibers in the first wash and the proportion increased to 36% in the 4th wash. In contrast to that, the release of cotton microfibers is noted to decrease with the number of laundry cycles. As far as the length of microfiber is considered, elastane microfibers are shorter than cotton microfibers. The length of elastane microfibers was higher in the initial wash (98/2 Cotton/Elastane fabric - 352.5 μm; 95/5 Cotton/Elastane fabric - 920 μm; 92/8 Cotton/Elastane fabric - 695 μm) and it is reduced with increment in the number of washes with a strong negative correlation of -0.88. A higher proportion of emissions and lower fiber length are the alarming negative impacts of elastane fibers in apparel. Based on this analysis, it is estimated that one square meter of fabric with a lower elastane percentage (2%) can release up to 2.81 × 104 microfibers into the environment at the first wash. The threatening issues of microfibers on aquatic life, particularly in terms of bioaccumulation and biomagnification, are alarming. Elastane blended fabrics should be given special attention because they can make the problem more serious by posing a risk of chemical leachates, such as bisphenols.
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Affiliation(s)
- R Rathinamoorthy
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India.
| | - S Raja Balasaraswathi
- Department of Fashion Technology, National Institute of Fashion Technology, Bengaluru 560102, India
| | - S Madhubashini
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - A Prakalya
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - J B Rakshana
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - S Shathvika
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
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Xie M, Lv M, Zhao Z, Li L, Jiang H, Yu Y, Zhang X, Liu P, Chen J. Plastisphere characterization in habitat of the highly endangered Shinisaurus crocodilurus: Bacterial composition, assembly, function and the comparison with surrounding environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165807. [PMID: 37506917 DOI: 10.1016/j.scitotenv.2023.165807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/15/2023] [Accepted: 07/24/2023] [Indexed: 07/30/2023]
Abstract
Plastisphere is a new niche for microorganisms that complicate the ecological effects of plastics, and may profoundly influence biodiversity and habitat conservation. The DaGuishan National Nature Reserve, one of the largest habitats of the highly endangered crocodile lizard (Shinisaurus crocodilurus), is experiencing plastic pollution without sufficient attention. Here, plastisphere collected from captive tanks of crocodile lizards in this nature reserve was characterized for the first time. Three types of plastic (PE-PP, PE1, and PE2) together with the surrounding water and soil samples, were collected, and 16S rRNA sequencing technology was used to characterize the bacterial composition. The results demonstrated that plastisphere was driven by stochastic process and had a distinct bacterial community with higher diversity than that in surrounding water (p < 0.05). Bacteria related to nitrogen and carbon cycles (Pseudomonas psychrotolerans, Methylobacterium-Methylorubrum) were more abundant in plastisphere than in water or soil (p < 0.05). More importantly, plastics recruited pathogens and those bacteria function in antibiotic resistant genes (ARGs) coding. Bacteria related to polymer degradation also proliferated in plastisphere, especially Bacillus subtilis with a fold change of 42.01. The PE2 plastisphere, which had the lowest diversity and was dominated by Methylobacterium-Methylorubrum differed from PE 1 and PE-PP plastispheres totally. Plastics' morphology and aquatic nutrient levels contributed to the heterogeneity of different plastispheres. Overall, this study demonstrated that plastispheres diversify in composition and function, affecting ecosystem services directly or indirectly. Pathogens and bacteria related to ARGs expression enriched in the plastisphere should not be ignored because they may threaten the health of crocodile lizards by increasing the risk of infection. Plastic pollution control should be included in conservation efforts for crocodile lizards. This study provides new insights into the potential impacts of plastisphere, which is important for ecological risk assessments of plastic pollution in the habitats of endangered species.
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Affiliation(s)
- Mujiao Xie
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Mei Lv
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Zhiwen Zhao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Linmiao Li
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Haiying Jiang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Yepin Yu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Xiujuan Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Ping Liu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Jinping Chen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China.
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15
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Bayo J, López-Castellanos J, Olmos S, Rojo D. A holistic approach on the impact of microplastic discharge from WWTPs to the neighboring environment in Southeast Spain. WATER RESEARCH 2023; 244:120516. [PMID: 37651865 DOI: 10.1016/j.watres.2023.120516] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 08/21/2023] [Indexed: 09/02/2023]
Abstract
The present study investigated the release of microplastics (MPs) from wastewater treatment plants (WWTPs) to the neighboring environment, including marine and coastal sediments, and fish. Here, we comprehensively investigated MP abundance in 34 samples of marine sediment, corresponding to 5,530.5 g of sediment (d.w.) collected at -8.0 m, -12.5 m, and -24.0 m, 69 samples of coastal sediment, accounting for 13,617.4 g (d.w.) from 17 different beaches from Mar Menor, and stomach and intestine of 17 fish samples of Sparus aurata, in the vicinity of Cartagena, a port city in Southeast Spain. The results showed that MPs were detected in all marine sediment samples, with an average abundance of 19.4 ± 2.4 items/kg (d.w.), in coastal sediments, with an average abundance of 52.5 ± 5.3 items/kg (d.w.), and fish samples, with an average of 8.2 ± 1.4 items per individual. The contribution of MPs from WWTPs to marine sediments is expected to be slow, as effluents were mostly dominated by fiber and film shapes, and by polymers less dense than seawater. There were no significant variations in the MP abundance of marine sediments after the atmospheric phenomenon named DANA, although a significant smaller MP size was reported, indicating a high mobility for tiny sizes. The same results were revealed for coastal sediment, although variations after DANA were statistically significant. Coastal sediment samples closer to WWTPs and agricultural fields with plastic mulching displayed higher MP concentrations, and an increase in the removal rate of MPs from WWTP effluents was negatively correlated with a decrease in MPs from fish collected. This study highlights the importance of sewage treatment plants in transporting MPs to the aquatic and terrestrial surrounding environment, which warrants further research on human health risks associated to MP pollution.
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Affiliation(s)
- Javier Bayo
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII 44 E-30203, Cartagena, Spain.
| | - Joaquín López-Castellanos
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII 44 E-30203, Cartagena, Spain
| | - Sonia Olmos
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII 44 E-30203, Cartagena, Spain
| | - Dolores Rojo
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII 44 E-30203, Cartagena, Spain
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Abstract
Plastic pollution and climate change are two major environmental focuses. Having the forming potential due to ambient plastic pollution, the environmental fate of microplastics shall be inevitably impacted by global warming. This manuscript discusses the destiny of environmental microplastics and characterizes their fate considering the framework of the planetary boundary. The major routes for microplastic discharge include the release of microplastic stored in the ice into the sea when the ice melts as a result of global temperature increase, flushing of the plastic/microplastic debris from the shorelines into the adjacent water bodies as a result of increased rainfall, redistribution of the microplastics away from the source of plastic debris as a result of increased wind, and accumulation of microplastics in the soil as a result of drought. A perspective on the impact of climate change and microplastic pollution on aquatic and soil organisms was discussed as well.
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Affiliation(s)
- Fatima Haque
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Chihhao Fan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
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17
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Zhang J, Guo N, Ding W, Han B, Zhao M, Wang X, Wang J, Cao B, Zou G, Chen Y. Microplastic pollution and the related ecological risks of organic composts from different raw materials. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131911. [PMID: 37356176 DOI: 10.1016/j.jhazmat.2023.131911] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
Organic composts are considered emerging contributors to microplastics (MPs) accumulation in agricultural soils. However, MPs pollution in organic compost from different raw materials is unknown. This study investigated MPs occurrence and characteristics in 124 organic compost samples, including single feedstock (livestock manure, poultry manure, crop straw, and solid waste) and compound organic composts, and quantitatively assessed related ecological risks of MPs pollution. The highest and lowest MPs abundances were observed in solid waste (6615 items kg-1) and crop straw (1500 items kg-1) composts, respectively. Compost MPs were mainly 0.5-1 mm (39.5%), colorful polypropylene and polyethylene fragments and films, and polyethylene terephthalate fibers, and the input to farmland soils was 6.96 × 107 to 1.88 × 108 items ha-1 yr-1. Regardless of feedstock, compost-based MPs of different shapes exhibited complicated weathering morphologies and adhered to some mineral colloids. The highest and lowest MPs-induced risk indices in solid waste (H = 134.3) and crop straw (H = 8.9) composts yielded hazard levels IV (high risk) and II (low risk), respectively, due to the different abundance of polymers with diverse hazard scores. These findings provide insights into MPs pollution in organic composts and a theoretical basis for the safe production and application of compost.
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Affiliation(s)
- Jiajia Zhang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Ning Guo
- Beijing Cultivated Land Construction and Protection Center, Beijing 100029, China
| | - Wencheng Ding
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Bao Han
- Fangshan Planting Technology Promotion Station of Beijing, Beijing 102412, China
| | - Meng Zhao
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Xuexia Wang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Jiachen Wang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Bing Cao
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Guoyuan Zou
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Yanhua Chen
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
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Xue W, Maung GYT, Otiti J, Tabucanon AS. Land use-based characterization and source apportionment of microplastics in urban storm runoffs in a tropical region. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 329:121698. [PMID: 37088252 DOI: 10.1016/j.envpol.2023.121698] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/03/2023]
Abstract
Urban stormwater runoff has been suggested as one important land-based pathway of microplastics (MPs) entering the oceans, in which the abundance and characteristics of MPs may be influenced by urban land use types. However, little information has been reported regarding this, especially in the tropical monsoon region. This study first reports the MPs in urban stormwater runoffs in a tropical monsoon region that were collected from four typical urban land use types, including industrial, highways, commercial, and residential areas. The average MP particle count and mass concentration were measured as 4.7 ± 3.5 particles/L and 3.8 ± 2.9 mg/L, respectively. MP abundances showed clear urban land use gradients following the order of industrial > transportation > commercial > residential area. In terms of the seasonal variation in MP abundances, a slightly increasing particle count in the dry season was noted for the residential site. Source apportionment of MPs in stormwater runoffs was demonstrated based on the land use type, particle morphology, and chemical compositions. With the simple apportionment approach, approximately 85% of the MP sources were able to be identified in the industrial, transportation, and residential sites. However, the commercial site showed high variability in terms of the morphology and polymer type of MPs. Furthermore, significantly positive correlations between MP abundance and runoff turbidity, TSS, COD, and rainfall intensity were identified, while, no significant correlation was found between MP characteristics and selected water quality/meteorological parameters.
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Affiliation(s)
- Wenchao Xue
- Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand.
| | - Gone Yi Thaw Maung
- Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand
| | - Jerome Otiti
- Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand
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