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61,005 resultsShowing papers similar to Research Progress of Microplastic Pollution Status and Risk Assessment of Typical Rivers in China
ClearMicroplastic pollution in Chinese Rivers: A detailed analysis of distribution, risk factors, and ecological impact
Researchers aggregated data from 2,474 microplastic samples across 165 publications to assess ecological risk in Chinese rivers, finding widespread contamination with average abundance varying substantially by watershed characteristics. A revised risk assessment accounting for particle morphology and polymer toxicity raised concern levels beyond previous estimates.
Occurrence, potential sources, and ecological risk assessment of microplastics in the inland river basins in Northern China
Researchers surveyed microplastic pollution in a typical urban river system in Northern China, examining both surface water and sediment samples. They found that river sediments contained dramatically more microplastics than surface water, acting as a sink for this pollution, with polypropylene and polyethylene being the most common types. The study suggests that small fiber and fragment-shaped particles under 0.5 mm dominate these environments, likely originating from everyday plastic products and wastewater discharge.
Pollution status of microplastics in the freshwater environment of China: a mini review
This review assessed microplastic pollution in China's freshwater environments including rivers, lakes, and reservoirs, finding widespread contamination in surface waters, sediments, and biota with variations linked to population density and industrial activity.
Distribution characteristics of microplastics in urban rivers in Chengdu city: The influence of land-use type and population and related suggestions
Researchers surveyed microplastic concentrations in urban rivers of Chengdu, China, finding MP abundances of 20-763 items per liter in water and linking higher concentrations to dense residential areas and industrial land use. Polyethylene and polypropylene fibers dominated the MP assemblage, consistent with textile laundering and household waste as primary sources.
Distribution Patterns of Microplastics Pollution in Urban Fresh Waters: A Case Study of Rivers in Chengdu, China
Researchers surveyed microplastic pollution in urban rivers of Chengdu, China, finding concentrations of 5 to 10.5 items per liter, predominantly transparent fragments and fibers, with spatial distribution influenced by urbanization and wastewater discharge.
Microplastic pollution in sophisticated urban river systems: Combined influence of land-use types and physicochemical characteristics
This study assessed microplastic pollution across an urban river network in China, finding that land-use type and water physicochemical properties jointly influence microplastic distribution, with industrial and residential areas contributing highest loads.
Microplastic Pollution in China’s Aquatic Systems: Spatial Distribution, Transport Pathways, and Controlling Strategies
This review synthesizes recent findings on microplastic pollution across China's rivers, lakes, reservoirs, and coastal waters. Researchers found that contamination levels vary dramatically by location, with urban waterways showing the highest concentrations and polypropylene and polyethylene being the most common polymer types. The study identifies rivers as major transport pathways carrying microplastics from inland areas to the sea and evaluates strategies for reducing this pollution.
Distribution and characteristics of microplastics in an urban river: The response to urban waste management
Microplastics were detected throughout surface water and sediments of an urban Chinese river (Nanming River) in both dry and wet seasons, with 25 different polymer types identified and the highest concentrations near sewage discharge points and plastic waste dump sites. The study shows that urban river management practices — particularly wastewater handling — are critical in controlling how much plastic reaches downstream ecosystems.
Characteristics and source-pathway of microplastics in freshwater system of China: A review
This national-scale review examines microplastic characteristics and source-pathway dynamics in Chinese freshwater systems including rivers, lakes, and reservoirs, synthesizing data showing that urban runoff, textile washing, and wastewater discharge are dominant sources. The authors identify key knowledge gaps in understanding microplastic transport from inland waters to the ocean in the world's largest plastic-producing country.
Research Progress of Microplastics in Freshwater Sediments in China
This review synthesizes Chinese research on microplastic pollution in freshwater sediments, covering detection methods, contamination levels across river systems, sources, and the potential ecological and human health implications.
Characteristics, Contamination Levels, and Ecosystem Risk Assessment of Microplastics in Surface Water of a Highly Urbanized River from a Developing Country
Researchers characterized microplastic contamination in an urban river near a megacity in a developing country, finding concentrations of 350 to 660 particles per cubic meter of water. Polyethylene and polypropylene from household and municipal waste were the most common types, and a risk assessment found concerning contamination levels at several sampling sites. The study highlights how rivers in developing nations can serve as major pathways for microplastics to reach the ocean and enter the food chain.
Distribution, Sources, and Ecological Risk Assessment of Microplastics in the Lower Minjiang River
Researchers characterized microplastic abundance, morphology, and polymer composition in surface water and sediments from the lower Minjiang River in China, then used pollution load indices and ecological risk assessments alongside socioeconomic data to identify likely pollution sources and ecological impacts.
[Composition and Distribution of Microplastics in the Water and Sediments of Urban Rivers in Beijing].
Researchers measured microplastic concentrations in water and sediments from eight sampling points along urban rivers in Beijing. Microplastics were widespread, with fibers being the most common type, likely from laundry and textile sources. Urban rivers are important conduits that transport microplastics from cities into larger water bodies and ultimately the ocean.
Spatio-temporal distribution of microplastics in surface water of typical urban rivers in North China, risk assessment and influencing factors
Researchers measured microplastic levels in two urban rivers in North China across wet and dry seasons and found that concentrations generally increased from upstream to downstream. The most common plastics were polyethylene and polypropylene fibers, with natural factors dominating upstream and human activities driving pollution downstream. The study provides a reference for understanding how urbanization contributes to microplastic contamination in river systems.
Occurrence and distribution of microplastics in an urban river: A case study in the Pearl River along Guangzhou City, China
Microplastics were measured in surface water and sediments at 14 sites along the urban Pearl River in Guangzhou, finding 379–7,924 items/m³ in water and 80–9,597 items/kg in sediment with polyethylene and polypropylene as dominant types, and a significant relationship between population density and microplastic abundance. The study documents extremely high microplastic contamination in an urban Chinese river and quantifies the influence of urbanization on microplastic loading.
Current practices and future perspectives of microplastic pollution in freshwater ecosystems in China
This review summarizes current knowledge and future research priorities for microplastic pollution in China's freshwater ecosystems, including rivers, lakes, and wetlands, identifying both urban and agricultural sources as major contributors. The authors call for nationally coordinated monitoring, standardized methods, and stronger regulatory frameworks to address the growing microplastic burden in Chinese freshwater systems.
Synthesis of dominant plastic microfibre prevalence and pollution control feasibility in Chinese freshwater environments
This review of microplastic pollution in Chinese freshwater environments found that microfibres dominate plastic morphologies in over 65% of samples from surface water, sediments, and wastewater effluents, and identifies fishing gear, textiles, and urban runoff as key microfibre sources requiring targeted pollution control.
Microplastics profile in a typical urban river in Beijing
Researchers profiled microplastic pollution along the Qing River, a typical urban river in Beijing receiving effluent from four wastewater treatment plants, investigating how discharged microplastics distribute and transform as they move through an urban riverine system.
Spatial variability of microplastic pollution on surface of rivers in a mountain-plain transitional area: A case study in the Chin Ling-Wei River Plain, China
Researchers measured microplastic pollution in surface waters from mountain tributaries to the main stream in the Chin Ling-Wei River Plain in China. They found concentrations ranging from 2.3 to 21 items per liter, with higher levels in the main stream compared to tributaries, and 82% of particles being fragments and films. The study suggests that as rivers flow from mountains to more developed plains, microplastic pollution risk increases sharply due to more diverse land use and human activity.
The effects of riverside cities on microplastics in river water: A case study on the Southern Jiangsu Canal, China
Researchers studied microplastic contamination in the Southern Jiangsu Canal in China and found that riverside cities significantly increase microplastic levels in river water, with abundance rising by 26% to 211% after flowing through urban areas. The study found that microplastic concentrations correlated with regional GDP and population density, with PET, polycarbonate, and polyethylene being the most common polymer types detected.
Microplastics in freshwater river sediments in Shanghai, China: A case study of risk assessment in mega-cities
Researchers characterized microplastics in freshwater river sediments across Shanghai, China, finding widespread contamination with higher concentrations near urban areas and industrial zones, dominated by fibers and fragments.
Distribution characteristics of microplastics in urban rivers of Songjiang District, Shanghai
Microplastics were found throughout urban river sections in Shanghai, China, with concentrations reflecting local population density and land use patterns. Urban rivers are a significant pathway for microplastic contamination flowing into coastal and marine environments.
[Pollution Status and Pollution Behavior of Microplastic in Surface Water and Sediment of Urban Rivers].
Researchers surveyed microplastic pollution in surface water and sediments of eight rivers across urban and suburban areas of Shanghai, finding widespread contamination that varied by location and urbanization level. The study provides a detailed picture of how urban rivers act as pathways for microplastics moving from land to sea.
Spatial and Temporal Distribution Characteristics and Potential Sources of Microplastic Pollution in China’s Freshwater Environments
Researchers surveyed microplastic pollution across freshwater environments in 21 major Chinese cities and found an average concentration of about 3,500 particles per cubic meter. The most common types were fibers, and concentrations generally increased from western to eastern China, closely tracking levels of human activity. The study found that microplastic abundance peaked in summer, likely driven by increased rainfall washing particles into waterways.