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61,005 resultsShowing papers similar to Identifying the characteristics of and factors driving spatiotemporal water quality variations in the Yellow River Basin, China, from 2008 to 2020
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.
[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.
Temporal and spatial variation of microplastics in Baotou section of Yellow River, China
This study tracked microplastic contamination in the Yellow River near Baotou, China, across different seasons and locations, sampling surface water, sediment, and nearby soil. Researchers found microplastics everywhere they looked, with fibers being the dominant type and concentrations varying by season and proximity to urban areas. The findings highlight that major rivers can serve as pathways carrying land-based microplastic pollution toward the ocean.
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.
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.
Contributions from typical sources to microplastics in surface water of a semiarid urban river
Researchers quantified the contributions of typical sources to microplastic pollution in the Yellow River's Lanzhou section. The study found that wastewater treatment plant effluent and urban tributaries were the dominant sources, with fibers and fragments composed mainly of polyethylene terephthalate and polyamide, highlighting the role of urban areas in river microplastic contamination.
Spatial distributions of macronutrients, heavy metals and microplastics in surface sediments of the mainstem and lakes in the middle part of the Yellow River Basin
Researchers mapped the distribution of macronutrients, heavy metals, and microplastics in sediments along the middle section of the Yellow River and adjacent lakes in China. They found that microplastic concentrations ranged from 233 to 3,333 items per kilogram in river sediments, with nylon as the dominant polymer type. Contamination levels increased significantly after the river flowed through intensive agricultural areas, with urban lakes showing the highest heavy metal concentrations.
Distribution of microplastic contamination in the major tributaries of the Yellow River on the Loess Plateau
Researchers investigated microplastic distribution across 96 sampling sites in three major tributaries of the Yellow River on the Loess Plateau, finding that microplastic abundance and characteristics differed among tributaries based on land use and human activity. The study identified environmental factors driving microplastic contamination patterns in these river systems.
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.
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.
Spatiotemporal Variations of Water Eutrophication and Non-Point Source Pollution Prevention and Control in the Main Stream of the Yellow River in Henan Province from 2012 to 2021
This is not a microplastics study; it tracks water quality and eutrophication in the Yellow River in Henan Province over a decade, finding improvements linked to pollution control policies and identifying agricultural runoff as the dominant non-point source of contamination outside the flood season.
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 North Yellow Sea, China: Observations on occurrence, distribution and identification
Researchers surveyed microplastic pollution across the North Yellow Sea, documenting their occurrence, distribution, and characteristics, and finding widespread contamination with higher concentrations in coastal areas and near river inputs.
Occurrence and Risk Assessment of Microplastics in a Source Water Reservoir in Middle Reaches of Yellow River
Researchers assessed microplastic occurrence and associated risk in a source water reservoir in Malaysia, detecting particles across multiple sampling sites and identifying dominant polymer types and size fractions relevant to drinking water safety.
Microplastics in Yellow River Delta wetland: Occurrence, characteristics, human influences, and marker
Microplastics were surveyed across different zones of the Yellow River Delta wetland with varying levels of human activity, finding widespread contamination even in protected areas with minimal human presence, with MP abundances ranging from 136 to 2060 items/kg. The study identifies direct human activities as a stronger driver of wetland microplastic contamination than tourism.
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 of microplastics in surface water of the lower Yellow River near estuary
Researchers characterized microplastics in surface water of the lower Yellow River near its estuary, finding that 93.12% were fibers, 87.94% were under 200 μm, and the main polymers were polyethylene, polypropylene, and polystyrene. The study provides baseline data on the types and distribution of microplastics entering the Bohai Sea from one of China's major rivers.
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.
Environmental fate of microplastics in the world's third-largest river: Basin-wide investigation and microplastic community analysis
Researchers conducted a basin-wide investigation of microplastics throughout the entire Yangtze River system, sampling water, sediment, and soil. The study found microplastics in all samples with abundance increasing from upstream to downstream, driven by both geographical and human factors, with major cities at the middle and lower reaches identified as key pollution nodes.
Occurrence and distribution of microplastics in the adjacent environment of Yellow River Delta, China
Researchers assessed microplastic pollution across water, sediment, and soil samples in the Yellow River Delta of China. The study found microplastic concentrations ranging from 0.5 to nearly 8 particles per liter in water and up to 4,200 particles per kilogram in sediments, with polyethylene and polypropylene being the most common polymer types, indicating widespread plastic contamination in this coastal environment.
Microplastic pollution in the Yangtze River: Characterization, influencing factors, and scenario-based predictions using machine learning method
Microplastic pollution in the Yangtze River was characterized across multiple sampling sites, documenting spatial patterns in particle abundance, polymer types, and size distributions. As one of the world's largest rivers, the Yangtze's microplastic burden has major implications for plastic delivery to the Pacific Ocean.
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.
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.
Characteristics and sources of microplastic pollution in the water and sediments of the Jinjiang River Basin
Researchers characterized microplastic pollution across surface water, groundwater, and sediments throughout the Jinjiang River Basin in China, tracing sources via principal component analysis and documenting contamination from inland areas to the estuary.