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Shen M, Li Y, Qin L, Chen X, Ao T, Liang X, Jin K, Dou Y, Li J, Duan X. Distribution and risk assessment of microplastics in a source water reservoir, Central China. Sci Rep 2025; 15:468. [PMID: 39747382 PMCID: PMC11695635 DOI: 10.1038/s41598-024-84894-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Accepted: 12/27/2024] [Indexed: 01/04/2025] Open
Abstract
The current researches on microplastics in different water layers of reservoirs remains limited. This study aims to investigate the microplastics in different water layers within a source water reservoir. Results revealed that the abundance of microplastics ranged from 2.07 n/L to 14.28 n/L (reservoir, water) and 3 to 7.02 n/L (river, water), while varied from 350 to 714 n/kg(dw) (reservoir, sediment) and 299 to 1360 n/kg(dw) (river, sediment). The average abundance in surface, middle, and bottom water were 6.83 n/L, 6.30 n/L, and 6.91 n/L respectively. Transparent fibrous smaller than < 0.5 mm were identified as the predominant fraction with Polypropylene and Polyethylene being the prevalent polymer types. Additionally, the pollution load index, hazard index, and pollution risk index were calculated for different layers and sediments. Results showed that surface water exhibited a moderate level of risk while the sediments posed a low level of risk. Both the middle and bottom water showed elevated levels of risk due to higher concentrations of polymers with significant toxicity indices. This study presents novel findings on the distribution of microplastics in different water layers, providing crucial data support for understanding the migration patterns of microplastics in source water reservoirs and facilitating pollution prevention efforts.
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Affiliation(s)
- Minghui Shen
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Yang Li
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China.
| | - Liwen Qin
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Xudong Chen
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Tianyu Ao
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Xishu Liang
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Kaibo Jin
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Yanyan Dou
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Juexiu Li
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Xuejun Duan
- School of Smarts Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
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Chen L, Zhou S, Su B, Qiu Y, Li Y. Microplastic pollution in Taihu Lake: Spatial distribution from the lake inlet to the lake centre and vertical stratification in the water column. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 363:125102. [PMID: 39395731 DOI: 10.1016/j.envpol.2024.125102] [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: 08/15/2024] [Revised: 09/22/2024] [Accepted: 10/08/2024] [Indexed: 10/14/2024]
Abstract
The aim of this study was to analyse the distribution characteristics of microplastics in lakes, assess their potential impacts on ecosystems, and explore effective management and control strategies. Despite a wealth of research focused on lake water, the variations in microplastics with offshore distance and their vertical distribution within the water column are not well understood. Here, we investigated the freshwater continuum from the inlet of Taihu Lake to the centre, and vertically from the surface to the bottom water. The results revealed that the distribution of microplastics (<5 mm in size) exhibited a clear spatial gradient. The microplastic abundance at the lake entrance was 2.12 times greater than that at the centre, and on the lake surface, the microplastic abundance was 1.36-1.69 times higher than that estimated from the water column. Notably, the proportion of small-sized microplastics (<0.1 mm) in the bottom water was 1.72 times higher than that in the surface water. The main types of polymers identified were polyamide (PA) and polyvinyl chloride (PVC), and their main sources may be from clothes washing and industrial activities. The Monte Carlo simulation results indicated that the overall risk of microplastics in surface water was higher than that in the water column, and the contributions of PVC and polyurethane (PU) to the ecological risk were 90.10% and 9.57%, respectively. Therefore, PVC and PU should be the priority of microplastic pollution control. This study provides the first comprehensive evaluation of the spatial ecological risk of microplastics in Taihu Lake, which improves our understanding of the distribution and environmental risks of microplastics in lake systems.
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Affiliation(s)
- Long Chen
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing, 210024, China
| | - Shenglu Zhou
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing, 210024, China.
| | - Bo Su
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing, 210024, China
| | - Yifei Qiu
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing, 210024, China
| | - Yan Li
- Collaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China
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Jiang J, He L, Liu J, Liu X, Huang J, Rong L. Experimental study of interception effect by submerged dam on microplastics. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135924. [PMID: 39321481 DOI: 10.1016/j.jhazmat.2024.135924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/20/2024] [Accepted: 09/19/2024] [Indexed: 09/27/2024]
Abstract
Submerged dam can alter microplastic (MP) transport, and act as a sink for MPs. In this paper, we investigated the interception rates of Polyvinyl chloride (PVC) and Polystyrene (PS) by an artificial submerged dam in a flow flume at first, and found that most of the un-intercepted PVC and PS particles by the dam accumulated behind it under the subcritical (Fr < 1) and turbulent (Re > 500) flows. PVC particles behind the dam mainly concentrated within two dam widths, and the concentration of PS particles decreased with the distance behind the dam lengthening. Then, we performed linear regression fitting and Redundancy Analysis (RDA) between the interception rates collected in 162 experiment tests and environmental factors, including flow velocity, distance to dam and MP concentration. The results showed that the interception rate of PVC and PS particles increased with the distance to dam lengthening, but decreased with the flow velocity and MP concentration heightening. RDA revealed that the interception rate was influenced by flow velocity, distance to dam, and MP concentration from the most to the least. Our findings are believed to contribute to understanding the mechanism of the interception effect of submerged dam on microplastics.
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Affiliation(s)
- Jianhao Jiang
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China
| | - Lulu He
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China; Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology (Zhejiang University of Technology), Hangzhou 310023, China.
| | - Junping Liu
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China; Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology (Zhejiang University of Technology), Hangzhou 310023, China
| | - Xu Liu
- Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, Zhejiang, China
| | - Junbao Huang
- Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, Zhejiang, China
| | - Li Rong
- College of Foreign Languages, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China
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Quadroni S, Cesarini G, De Santis V, Galafassi S. Interconnected impacts of water resource management and climate change on microplastic pollution and riverine biocoenosis: A review by freshwater ecologists. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 372:123363. [PMID: 39566213 DOI: 10.1016/j.jenvman.2024.123363] [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: 07/29/2024] [Revised: 11/03/2024] [Accepted: 11/12/2024] [Indexed: 11/22/2024]
Abstract
The relationship between river hydrology and microplastic (MP) pollution is complex: increased discharge does not always mobilize more MPs, but floods can effectively flush out MPs from river catchments. Climate change and water resource management further influence MP pollution and its fate by altering river hydro-sedimentary regimes. This review investigates the interconnected impacts of these factors from a comprehensive perspective, focusing on how they affect MP concentration in freshwater ecosystems, particularly in regulated rivers and associated reservoirs. Our review reveals a scarcity of studies that jointly analyze the interrelated issues of MP pollution, water resource management, and climate change. Key findings indicate that variations in river discharge significantly influence MP mobilization, mainly depending on catchment land use, channel morphology, position within the catchment, and MP characteristics. Reservoirs function as both sinks and sources of MPs, underscoring their complex role in MP dynamics and the need for sustainable sediment management strategies. The increasing frequency of extreme weather events, driven by climate change, along with prolonged droughts intensified by water management practices, exacerbates MP pollution. These changes contribute to the local concentration of MPs, posing direct physical threats to aquatic organisms, particularly benthic species, through pollution and habitat alterations. Current policies on plastic pollution, water resources and climate change are underdeveloped, as these topics have been treated separately so far. In conclusion, this review provides perspectives on future research and policy directions to address challenges posed by MPs and to preserve rivers against multiple stressors.
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Affiliation(s)
- Silvia Quadroni
- Department of Theoretical and Applied Sciences, University of Insubria, 21100, Varese, Italy
| | - Giulia Cesarini
- Water Research Institute, National Research Council of Italy, 28922, Verbania, Pallanza, Italy.
| | - Vanessa De Santis
- Water Research Institute, National Research Council of Italy, 20861, Brugherio, MB, Italy; National Biodiversity Future Center, 90133, Palermo, Italy
| | - Silvia Galafassi
- Water Research Institute, National Research Council of Italy, 28922, Verbania, Pallanza, Italy; National Biodiversity Future Center, 90133, Palermo, Italy
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Liu Y, Zhao S, Wang D, Wang S, Ding X, Han K, Wang R, Kou Y, Zhou G, Shen W. Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170300. [PMID: 38272090 DOI: 10.1016/j.scitotenv.2024.170300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/13/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
Reservoirs are regarded as potential collection sites for microplastics (MPs), and ample water resources in plateau regions provide favorable natural conditions for hydroelectric power generation. However, research on the impact of cascade reservoir construction in the plateau region on the fate of MPs within the watershed is limited. In this study, the Yalong River, an alpine canyon river in the eastern Qinghai-Tibet Plateau, was selected as the research area. This study explored the distribution of MPs at various depths in water, sediment, and riverbank soil as well as the formation of "MP communities" within the river-cascade reservoir system. Furthermore, the effects of dam construction on MPs' migration in different environments were analyzed. The results revealed that the abundance of MPs in the water and sediment within the cascade reservoir area (CRA) was significantly higher than that in the river area (RA) (P < 0.001). Additionally, the trend of increasing MPs in water with decreasing altitude was notably slower in CRA. Regarding shape, the proportion of fibers in the water within the CRA was significantly lower than that in the RA, with a smaller vertical migration rate in the water than in the sediment. The proportion of MPs < 500 μm in the water within the CRA was significantly higher than that in the RA. High-density MPs were notably deposited in the reservoir sediments. The analysis of the MP communities revealed that the construction of cascade dams led to relative geographical isolation between different sampling sites, reducing the similarity of MP communities in the CRA. This study established a theoretical foundation for understanding the impact of cascade dam construction on the fate characteristics of MPs and their potential risks in plateau areas.
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Affiliation(s)
- Yixuan Liu
- College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, Yangling, Shaanxi 712100, PR China; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Shaoting Zhao
- Agricultural Technology Promotion Center of Xi'an, Xi'an, Shaanxi 710000, PR China
| | - Dongzhi Wang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, PR China
| | - Shichen Wang
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiaofan Ding
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, PR China
| | - Kaiyang Han
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Ruiying Wang
- Xi'an Institute of Environmental Hygiene Sciences, Xi'an, Shaanxi 710075, PR China
| | - Yuyang Kou
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Guangqian Zhou
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Weibo Shen
- College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, Yangling, Shaanxi 712100, PR China; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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Tan Y, Dai J, Xiao S, Tang Z, Zhang J, Wu S, Wu X, Deng Y. Occurrence of microplastic pollution in rivers globally: Driving factors of distribution and ecological risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:165979. [PMID: 37543313 DOI: 10.1016/j.scitotenv.2023.165979] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/19/2023] [Accepted: 07/30/2023] [Indexed: 08/07/2023]
Abstract
Microplastics, as global emerging pollutants, have received significant attention worldwide due to their ubiquitous presence in the rivers. However, there is still a lack of clarity on the occurrence, driving factors, and ecological risks of microplastics in rivers worldwide. In this study, a global microplastic dataset based on 862 water samples and 445 sediment samples obtained from 63 articles was constructed, which revealed the temporal and spatial distribution of abundance and morphological characteristics of microplastics in rivers across the globe. In global rivers, the abundance of MPs in both water and sediment spans across 10 and 4 orders of magnitude, respectively. The MP comprehensive diversity index based on the physical morphological characteristics of MPs indicated a significant positive correlation between the pollution sources of MPs in different environmental media. Based on the data was aligned to the full-scale MPs, a novel framework was provided to evaluate the ecological risk of MPs and the interaction effects between the influencing factors driving the distribution characteristics of MPs in rivers around the world. The results obtained demonstrated a wide variation in the key driving factors affecting the distribution of microplastics in different environmental media (water and sediment) in rivers globally. The diversity indices of the morphological characteristics of MPs in densely populated areas of lower-middle income countries in Asia were significantly higher, implying that the sources of microplastics in these regions are more complex and extensive. More than half of the rivers are exposed to potential ecological risks of MPs; however, microplastics may pose only immediate risks to aquatic species in Burigang River, Bangladesh. This can provide valuable insights for formulating more effective scientific strategies for the management of MP pollution in rivers.
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Affiliation(s)
- Yanping Tan
- College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625000, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China; State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Jiangyu Dai
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China.
| | - Shuwen Xiao
- College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625000, China
| | - Zhiqiang Tang
- College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625000, China
| | - Jianmin Zhang
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Shiqiang Wu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China
| | - Xiufeng Wu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China
| | - Yu Deng
- College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625000, China.
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Li Z, Xu B, Zhang R, Wang F, Li L, Wang K, Zhang R, Jing X, Liu Y, Chen P. Effects of land use on soil microplastic distribution adjacent to Danjiangkou reservoir, China. CHEMOSPHERE 2023; 338:139389. [PMID: 37394188 DOI: 10.1016/j.chemosphere.2023.139389] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/04/2023]
Abstract
As a new type of pollutant, microplastics (MPs) are an increasingly prominent threat to terrestrial ecosystems. However, the distribution, sources and influencing factors of MPs need to be further studied, especially in reservoir surrounding soil, a hot zone for MPs accumulation and a source of MPs in the watershed. Here, we detected MPs in 120 soil samples collected around Danjiangkou reservoir, with their amount ranging from 645 to 15,161 items/kg. The topsoil layer at 0-20 cm had lower levels of MPs (mean 3989 items/kg) than subsoils at 20-40 cm (mean 5620 items/kg). The most commonly detected types of MPs were polypropylene (26.4%) and polyamide (20.2%), with sizes ranging from 0.05 to 0.5 mm. With regard to shape, most MPs (67.7%) were fragmented, while fibers make up 25.3% of the MPs. Further analysis revealed that the number of villages had the highest driving force for the abundance of MPs with 51%, followed by pH 25% and land use types 10%. The water and sediment of reservoirs are important sources of agricultural soil microplastics. Paddy lands showed higher microplastics levels than orchards and dry croplands. The polymer risk index indicated that the agricultural soil near Danjiangkou reservoir had the highest MPs risk. This study highlights the importance of assessing MPs contamination in the agroecosystems surrounding reservoirs and provides valuable insight into clarify the ecological risks of MPs in the reservoir area.
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Affiliation(s)
- Zhiguo Li
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, The Chinese Academy of Sciences & Hubei Province, Wuhan, 430074, China
| | - Bo Xu
- College of Earth Sciences, Jilin University, Changchun, Jilin, 130061, China
| | - Runhua Zhang
- Wuhan Academy of Agricultural Science, Vegetable Research Institute, Wuhan, 430345, China
| | - Feng Wang
- Hubei Provincial Academy of Eco-Environmental Sciences (Provincial Eco-Environmental Engineering Assessment Center), Wuhan, 430070, China
| | - Linyang Li
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China
| | - Kaili Wang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China
| | - Runqin Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China
| | - Xinxin Jing
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, The Chinese Academy of Sciences & Hubei Province, Wuhan, 430074, China
| | - Yi Liu
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, The Chinese Academy of Sciences & Hubei Province, Wuhan, 430074, China.
| | - Peng Chen
- Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, The Chinese Academy of Sciences & Hubei Province, Wuhan, 430074, China.
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Zhang M, Xu D, Liu L, Wei Y, Gao B. Vertical Differentiation of Microplastics Influenced by Thermal Stratification in a Deep Reservoir. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:6999-7008. [PMID: 37083351 DOI: 10.1021/acs.est.2c09448] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Microplastics (MPs) are an emerging environmental concern. However, vertical transport of MPs remains unclear, particularly in deep reservoirs with thermal stratification (TS). In this study, the vertical variation in MP organization, stability, migration, and the driving factors of the profile in a deep reservoir were comprehensively explored. This is the first observation that TS interfaces in a deep reservoir act as a buffer area to retard MP subsidence, especially at the interface between the epilimnion and the metalimnion. Interestingly, there was a size-selection phenomenon for MP sinking. In particular, the high accumulation of large-sized MPs (LMPs; >300 μm) indicated that LMPs were more susceptible to dramatic changes in water density at the TS interfaces. Furthermore, simultaneous analysis of water parameters and MP surface characteristics showed that the drivers of MP deposition were biological to abiotic transitions during different layers, which were influenced by algae and metals. Specifically, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy and microscopic Fourier transform infrared analyses implied that the occurrence of metals on the MP surface can promote MP deposition in the hypolimnion. Our findings demonstrated that TS significantly influenced the MP fate in deep reservoirs, and the hotspot of MP exposure risk for vulnerable benthic organisms on the reservoir floor deserves more attention.
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Affiliation(s)
- Mengyu Zhang
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
- Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Dongyu Xu
- Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Linghua Liu
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
- Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Yiting Wei
- Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Bo Gao
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
- Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
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Liu Y, Liu Y, Li Y, Bian P, Hu Y, Zhang J, Shen W. Effects of irrigation on the fate of microplastics in typical agricultural soil and freshwater environments in the upper irrigation area of the Yellow River. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130766. [PMID: 36669409 DOI: 10.1016/j.jhazmat.2023.130766] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
Agricultural activities are among the most significant sources of microplastics (MPs) in water. However, few studies have explored the effect of irrigation on the fate of MPs in agricultural systems. This study investigated the distribution of MPs in agricultural soil, surface water, and sediment of adjacent rivers, as well as the "MP communities" in various environments before and after irrigation in a typical agricultural irrigation area of the Yellow River. MPs were detected in all of the examined sites. The number of MPs in surface water and sediment increased after irrigation, whereas those in the surface soil of croplands decreased. In the vertical direction, irrigation accelerated the migration of MPs (< 100 µm) deep into the soil. The vertical mobility of fibers in soil was faster than that of other types of MPs. Moreover, irrigation decreased the correlation between soil properties and MPs in soils. MP community analysis indicated that irrigation enhanced the differences between MP communities among adjacent environments. Collectively, our findings confirmed that river water irrigation caused secondary MP pollution in the soil environment and accelerated MP pollution in deep soil. Therefore, this study provides a theoretical basis for the development of strategies for MP pollution control in agricultural soil.
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Affiliation(s)
- Yixuan Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yaxing Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yue Li
- College of Art and Design, Rural Vitalization Research Center in the Wuling Mountain Area, Huaihua University, Huaihua 418000, PR China
| | - Pengyang Bian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yue Hu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jie Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Weibo Shen
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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