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61,005 resultsShowing papers similar to [Microplastic Pollution Characteristics and Ecological Environmental Risk Assessment in Water and Sediments of the Yiluo River Basin].
Clear[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.
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.
[Microplastics pollution in the Yellow River basin: current status and control strategy].
This review summarizes microplastic contamination in the Yellow River basin, finding that pollution increases from upstream to downstream with the highest concentrations in the Yellow River Delta wetland, and that both sediment and surface water are impacted at levels posing risks to aquaculture and human health.
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.
[Occurrence Characteristic and Risk Assessment of Microplastics in Sishui River (Xingyang Section)].
Researchers characterized microplastics in water samples from sewage outlet sites along the Sishui River (Xingyang section), a Yellow River tributary, finding predominantly transparent fibers and fragments under 500 micrometers composed mainly of PET and PE polymers and conducting ecological risk assessment.
Microplastic pollution in Yellow River: Current status and research progress of biotoxicological effects
A comprehensive assessment of microplastic pollution in China's Yellow River found average abundances of 5,358–654,000 items/m³ in water and 43.57–615 items/kg in sediment, with fibers dominant in water samples, and reviewed evidence of biotoxicity in fish, invertebrates, and microorganisms.
[Distribution, Sources, and Risk Assessment of Microplastics in Surface Sediments of Yellow River Delta Wetland].
Researchers surveyed microplastic pollution in surface sediments of the Yellow River Delta wetland and found concentrations ranging from 20 to 520 particles per kilogram, primarily consisting of fibers. The dominant polymer types included rayon, polyethylene, polyester, and PET, with most particles larger than 1 mm. Pollution index assessments indicated the wetland was at a slightly polluted level with relatively low ecological risk overall.
[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.
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.
Occurrence Characteristics and Ecological Risk Assessment of Microplastics in Aquatic Environments of Cascade Reservoirs Along the Middle-Lower Han River
The occurrence characteristics and ecological risk of microplastics were assessed in a specific environment, providing spatial distribution data and risk indices. Such assessments are important for establishing baseline contamination levels and identifying sites requiring remediation.
[Occurrence Characteristics and Risk Assessment of Microplastics in Water and Sediments of Anhui Section of Huaihe River Basin].
Researchers analyzed microplastic occurrence characteristics and ecological risk in water and sediments across the Anhui section of the Huaihe River Basin using field sampling, scanning electron microscopy, and FTIR spectroscopy. They found 100% detection rates at all sampling sites, with average microplastic abundances of 39,800 particles per cubic meter in surface water and 5,078 particles per kilogram in sediments, with risk index and pollution load index assessments indicating moderate to high ecological risk levels.
Distribution of microplastics in Lanzhou section of the Yellow River: Characteristics, ecological risk assessment, and factors analysis
Researchers surveyed microplastic contamination in surface water and sediments along the Lanzhou section of China's Yellow River. They found that most particles were small fibrous fragments of PET and polypropylene, with higher abundances during the dry season, and that human activity and weather patterns influenced microplastic distribution. Ecological risk assessments indicated the overall pollution level in this stretch of the river was relatively low.
Characteristics of microplastic pollution in sediments and error analysis of ecological risk assessment in Qin River, China
This study characterized microplastics in sediments of the Qin River in Jincheng, China, including shape, color, and polymer type, and conducted an ecological risk assessment while analyzing sources of error that may affect the reliability of such assessments.
Seasonal and spatial variation, and land-use influences on riverine microplastics and their ecological risks in the Yanshui River Basin
Researchers conducted year-round, basin-wide monitoring of microplastics in the Yanshui River Basin across 14 sites spanning agricultural, industrial, and urban land uses, finding average concentrations of 235.1 items/L in surface water and 20,370 items/kg in sediment. Microplastic abundance peaked at upstream agricultural and downstream drainage sites, with sediment functioning as a major accumulation sink.
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.
[Pollution Characteristics and Ecological Risk Assessment of Microplastics in the Yangtze River Basin].
A comprehensive survey of the Yangtze River basin — the longest river in China — found microplastics at abundances ranging from 21 to over 44,000 particles per cubic meter, with the highest concentrations in urban tributary areas like Chengdu. Fibers and fragments under 1 mm were most common, and statistical analysis linked microplastic abundance strongly to vehicle ownership and tourism activity. The study found that roughly 69% of sampled areas fall within elevated ecological risk categories, with Taihu Lake identified as a particular hotspot.
[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.
[Distribution, Risk, and Influencing Factors of Microplastics in Surface Water of Huangshui River Basin].
Researchers collected 63 surface water samples across the Huangshui River Basin on the Qinghai-Tibet Plateau during the wet season, using metallographic microscopy and Fourier infrared spectroscopy to characterize microplastic distribution, and applied risk index and pollution load index models to evaluate ecological risks.
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.
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.
Distribution, sources and multi-dimensional environmental risk assessment of microplastics in soils and groundwater along the middle and lower reaches of the Yellow river
Researchers assessed microplastic contamination in both soil and groundwater along the middle and lower reaches of China's Yellow River. They found soil concentrations ranging from 426 to over 3,000 particles per kilogram, with fibers being the dominant shape in both soil and groundwater. A novel risk assessment approach revealed that while soil contamination was mostly moderate, nearly a quarter of groundwater samples reached high-risk levels.
Abundance, characteristics and risk assessment of microplastics in aquatic sediments: A comparative study in the Yellow River and Yellow Sea
Researchers compared microplastic contamination in sediments from the Yellow River and Yellow Sea using laser direct infrared imaging. The study found that microplastic abundance in Yellow Sea sediment was 2.9 times higher than in the Yellow River, with particles smaller than 100 micrometers accounting for over 90% of the total. Risk assessment indicated that all sampled environments exhibited high ecological risk, highlighting the importance of high-resolution detection methods.
Assessment of potential ecological risk for microplastic particles
Researchers developed a framework for assessing the ecological risk of microplastic particles, incorporating particle characteristics, environmental concentrations, and species sensitivity data. The assessment identified conditions under which current environmental microplastic levels pose significant risk to aquatic organisms.
With spatial distribution, risk evaluation of heavy metals and microplastics to emphasize the composite mechanism in hyporheic sediments of Beiluo River
Researchers mapped heavy metal and microplastic contamination in river sediments in China, finding that cadmium, lead, and arsenic posed the highest contamination risk, while fiber-shaped microplastics under 500 micrometers were most common. Heavy metals were found concentrated on microplastic surfaces through electrostatic attraction and bacterial biofilms, meaning the plastics serve as carriers for toxic metals in the water. This combined pollution is concerning because river sediments can release contaminants into water used for drinking and agriculture.