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61,005 resultsShowing papers similar to Microplastic pollution in sophisticated urban river systems: Combined influence of land-use types and physicochemical characteristics
ClearDistribution 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.
Spatiotemporal dynamics of microplastics in an urban river network area
Researchers investigated microplastic dynamics in an urban river network in eastern China, finding abundances of 2.3 to 104.6 particles per liter that were significantly higher during wet seasons and concentrated near commercial, industrial, and wastewater discharge areas.
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.
Abundance, Distribution and Drivers of Microplastic Contaminant in Urban River Environments
Researchers surveyed microplastic distribution in urban river environments and identified key drivers of accumulation hotspots, finding that land use, hydrology, and infrastructure factors concentrated microplastics at predictable locations that could inform targeted management interventions.
The effects of land use types on microplastics in river water: A case study on the mainstream of the Wei River, China
Researchers studied how different land use types along China's Wei River, a major tributary of the Yellow River, influence microplastic concentrations in the water. The study found that urban and agricultural areas contributed more microplastics than other land use types, with seasonal variations also playing a role, highlighting how human activities directly shape plastic pollution patterns in river systems.
Microplastics pollution in inland freshwaters of China: A case study in urban surface waters of Wuhan, China
Researchers characterized microplastic pollution in inland freshwaters across urban suburban areas of China, finding contamination that reflected land use intensity and population density in the surrounding catchments.
Microplastic 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.
Microplastic pollution in the Yangtze River Basin: Heterogeneity of abundances and characteristics in different environments
Researchers compiled microplastic data from 624 sampling sites across the Yangtze River Basin covering water, sediment, soil, and biota, revealing heterogeneous contamination patterns driven by local land use, population density, and wastewater infrastructure.
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.
[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.
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.
Interventions of river network structures on urban aquatic microplastic footprint from a connectivity perspective
Researchers analyzed microplastic distribution across a Nanjing, China urban river network using multiple detection methods, finding ubiquitous and abundant microplastics with distinct hotspots and heterogeneous characteristics linked to how river infrastructure structures such as weirs and gates interrupt microplastic connectivity and flow.
Environmental behavior of microplastic - heavy metal synergistic contamination in a typical urban-rural river network
Researchers investigated the seasonal co-occurrence of microplastics and heavy metals in urban and rural rivers in a Chinese inland city. They found that both pollutant types were present in all water samples and that microplastics can adsorb heavy metals, potentially increasing the combined environmental risk. The study reveals that river networks connecting urban and rural areas serve as pathways for spreading this dual contamination.
Interventions of river network structures on urban aquatic microplastic footprint from a connectivity perspective
Researchers analyzed how urban river network structures influence microplastic distribution in Nanjing, China, finding that river connectivity patterns significantly affect the spatial variability of microplastic footprints in urban waterways.
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 Characteristics of Microplastics in Domestic Sewage Waters: A Case Study in Guilin City, China
Researchers collected water samples from 20 sewage outlets in Guilin, China, to characterize microplastic abundance, morphology, and size distribution, and applied multivariate statistical analysis to identify hydrochemical factors influencing microplastic concentrations. The case study provides spatial data on domestic sewage as a microplastic source in a Chinese urban river system.
[Temporal and Spatial Distribution and Risk Assessment of Microplastics in Multiple Media of an Urban River].
Researchers collected water and sediment samples from the Guanzhong section of the Weihe River Basin during wet and dry seasons to characterize the temporal and spatial distribution and risk of microplastics in an urban river system. Using density flotation and multiple analytical methods, they systematically documented microplastic abundance, morphology, and polymer composition across multiple environmental media.
The urban microplastic footprint: investigating the distribution and transport
Researchers investigated the distribution and transport of microplastics within an urban environment, mapping the 'urban microplastic footprint' to understand how city infrastructure and land use patterns drive the spatial distribution and downstream export of plastic particles to receiving water bodies.
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.
Effects of land use on the distribution of soil microplastics in the Lihe River watershed, China
Researchers surveyed microplastic contamination across five different land use types in a Chinese river watershed. They found that urban soils had the highest microplastic levels, followed by agricultural areas, with woodland having the lowest, and that population density strongly correlated with microplastic diversity. The study suggests that human activity intensity and plastic waste disposal are the main drivers of soil microplastic pollution at the watershed scale.
Microplastic pollution differences in freshwater river according to stream order: Insights from spatial distribution, annual load, and ecological assessment
Researchers compared microplastic pollution levels in a freshwater river across different land-use zones, finding higher concentrations near urban and agricultural areas than in forested regions. Fiber-type microplastics were predominant across all sampling locations.
Research Progress of Microplastic Pollution Status and Risk Assessment of Typical Rivers in China
Rivers across China carry substantial microplastic loads, and this review finds that abundance is closely tied to population density, with urban rivers showing higher concentrations than rural ones. More than 60% of microplastics detected in most rivers were smaller than 1 mm — the size range most readily ingested by aquatic organisms and most difficult to remove by conventional treatment. The authors identify sewage plants, surface runoff, and atmospheric deposition as the main sources, and flag gaps in current risk assessment frameworks for river microplastics.
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.
[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.