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61,005 resultsShowing papers similar to Microplastic pollution in Chinese Rivers: A detailed analysis of distribution, risk factors, and ecological impact
ClearCorrecting microplastic pollution and risk assessment in Chinese watersheds
Researchers compiled over 2,400 samples from 165 studies to create a national dataset of microplastic pollution across Chinese watersheds and developed a novel risk assessment framework. The study found that microplastic concentrations varied enormously across seven orders of magnitude, that population density and precipitation were key drivers of contamination, and that half of sampling sites fell into dangerous or extremely dangerous ecological risk categories.
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.
Microplastic pollution research methodologies, abundance, characteristics and risk assessments for aquatic biota in China
Researchers reviewed the current state of microplastic pollution research in China's aquatic environments, covering detection methods, abundance data, characteristics, and risk assessments for aquatic organisms. The review highlights that China's marine and freshwater environments are seriously polluted by microplastics, with ingestion by aquatic organisms posing potential ecological harm.
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.
[Microplastic Pollution Status and Ecological Risk Evaluation in Weihe River].
This Chinese study characterized microplastic abundance, shapes, sizes, colors, and polymer types in the Weihe River in northwest China. The findings document significant microplastic contamination in a major regional river that drains one of China's most densely populated agricultural areas, raising concerns about both ecosystem and human health.
[Occurrence Characteristics and Ecological Risk Assessment of Microplastic Pollution in the Yellow River Basin].
Researchers examined the spatial distribution, composition characteristics, and ecological risks of microplastic pollution across the Yellow River Basin in China, assessing contamination levels in the nation's historically significant waterway system.
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.
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.
[Basin Distribution and Ecological Risk of Microplastics in Surface Water Bodies in China].
A comprehensive analysis of data from China's ten major river basins (2014–2023) found microplastic contamination in rivers, lakes, reservoirs, and estuaries across the country, with microplastic abundance strongly correlating with population density and economic output. Polypropylene and polyethylene were the dominant polymers, and the Haihe River Basin near Beijing was classified as high ecological risk. The study also highlighted a major data gap: far less is known about microplastics in China's less-populated northwestern regions. These findings provide a national-scale picture of where microplastic pollution is most severe and what types of plastics are driving the ecological risk.
Microplastics in China’s surface water systems: Distribution, driving forces and ecological risk
Researchers compiled over 14,000 samples from across China to map microplastic pollution in surface water systems using machine learning models. They found that microplastic abundance varied enormously across regions, driven by a complex mix of human activities and natural conditions. The ecological risk assessment revealed that watersheds in nearly all Chinese provinces face high to extremely high contamination levels, underscoring the urgency of nationwide management efforts.
Assessment of potential ecological risk for microplastics in freshwater ecosystems
Researchers assessed the ecological risk of microplastics across freshwater ecosystems worldwide, including rivers and lakes in China, Vietnam, Europe, and South America. While one risk method showed negligible danger, more comprehensive assessment approaches revealed extreme ecological threats at every location studied, suggesting that microplastic pollution in freshwater may be more serious than previously thought.
Recalculating national occurrence of microplastics in China’s freshwater
Researchers developed a size-abundance correction method to harmonize inconsistent microplastic field observations across China's freshwater systems. After recalculating data from over 1,300 sampling points, they found average microplastic abundance was 4,785 particles per cubic meter, considerably higher than previously reported, though 83.9% of locations showed low ecological risk with unexpectedly high risk in undeveloped northwestern regions.
Spatial Distribution and Ecological Risk of Microplastic Contamination in River Water Near a Landfill Leachate Disposal Area: A Case Study of Supit Urang Landfill, Malang City, Indonesia
Researchers mapped the spatial distribution and ecological risk of microplastic contamination across river sediments in a Chinese river system, finding risk levels varied with proximity to urban centers and industrial zones, and that certain polymer types posed elevated ecological hazard.
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.
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.
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.
Occurrence of microplastic pollution in rivers globally: Driving factors of distribution and ecological risk assessment
Researchers constructed a global dataset of microplastic pollution across 862 river water and 445 sediment samples, identifying population density, GDP, and plastic waste generation as key driving factors of riverine microplastic distribution and ecological risk.
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.
Microplastic pollution characteristics and ecological risk assessment in the Wuding River Basin, China
Researchers surveyed microplastic pollution in the Wuding River, a tributary of China's Yellow River, collecting samples from 19 sites across water and sediment. They found that microplastic abundance varied significantly across locations, with fibers being the dominant shape, and identified population density and land use as key factors influencing contamination levels. The ecological risk assessment indicated that certain areas of the basin face moderate to high risk from microplastic pollution.
A new holistic perspective to assess the ecological risk of microplastics: A case study in Baiyangdian Basin, China
Researchers developed a more comprehensive method for assessing the ecological risks of microplastic pollution by considering not just concentration but also the physical and chemical properties of the particles. Applied to a Chinese wetland basin, the approach revealed that traditional methods significantly underestimate the true ecological risk, with human activity and poor water flow contributing to the highest danger zones.
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.
[Pollution Characteristics and Risk Assessment of Microplastics in the Xiamen Houxi River Watershed].
A comprehensive survey of the Xiamen Houxi River watershed found 100% microplastic detection across all sampling points, with abundance, shape, color, and polymer type assessed alongside ecological risk using pollution load and risk indices.
Pollution characteristics and prospective risk of microplastics in the Zhengzhou section of Yellow River, China
Researchers analyzed microplastic pollution across fourteen sampling sites in the Zhengzhou section of the Yellow River in China. The study found microplastic concentrations ranging from 2.33 to 15.50 particles per liter, higher than other inland Chinese rivers, with fibers and fragments being the dominant types and polyethylene the most common polymer.
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.