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61,005 resultsShowing papers similar to Extent and risks of microplastic pollution in the Yangtze River. State of the science
ClearMicroplastic contamination in the yangtze river: Evaluating pollution levels and the need for standardized research methods
This review synthesizes data from 21 studies to conduct a comprehensive risk assessment of microplastic pollution throughout the Yangtze River Basin, applying QA/QC protocols to characterize particle abundance, size, shape, and polymer type while calling for standardized research methods to improve comparability.
Microplastic contamination in the yangtze river: Evaluating pollution levels and the need for standardized research methods
This review synthesizes data from 21 studies to assess microplastic pollution levels across the Yangtze River Basin, characterizing particles by abundance, size, shape, and polymer type while applying strict QA/QC protocols and highlighting the critical need for standardized research methods.
Occurrence of microplastics pollution in the Yangtze River: Distinct characteristics of spatial distribution and basin-wide ecological risk assessment
Researchers analyzed microplastic pollution across the entire Yangtze River basin, compiling data from the headwaters to the estuary to create a comprehensive picture of contamination. They found distinct spatial distribution patterns, with higher concentrations in urban and industrialized stretches of the river. The study also conducted a basin-wide ecological risk assessment, finding moderate to high risk levels in several sections.
Microplastics in Surface Water in the Yangtze River, China: Basin-Wide Observation, Multiple Ecological Risk Assessment and Sustainability
Researchers conducted a three-year survey of microplastic pollution across the entire Yangtze River Basin in China and found an average of nearly 8,800 microplastic particles per cubic meter of surface water. Tiny particles smaller than 0.3 millimeters made up over 92% of what was found and drove the variation in pollution levels between locations. The study highlights that previous research may have significantly underestimated microplastic contamination by not capturing these smallest particles.
Distribution, abundance, and risks posed by microplastics in surface waters of the Yangtze River Basin, China
Researchers compiled data on microplastic pollution across the entire Yangtze River Basin in China and found that contamination levels vary significantly by region, with urban and industrial areas showing the highest concentrations. The ecological risk assessment revealed that microplastics in certain stretches of the basin pose a notable threat to aquatic organisms. This basin-wide view helps identify pollution hotspots where intervention could most benefit both ecosystems and the communities that rely on the river.
Occurrence and characteristics of microplastics across the watershed of the world’s third-largest river
Researchers conducted a large-scale survey of microplastic pollution across the entire Yangtze River watershed, the world's third-largest river. They found microplastics throughout the river system, with concentrations decreasing from upstream to downstream, and fiber-shaped particles smaller than 1 mm being most common. The study provides important baseline data showing that even remote upstream areas of major river systems carry significant microplastic contamination.
Distribution, characteristics, and research status of microplastics in the trunk stream and main lakes of the Yangtze River: A review
This review synthesizes research on microplastic distribution, characteristics, and sources in the Yangtze River trunk stream and its major lakes, identifying industrial discharges, urban runoff, and agricultural films as dominant pollution sources affecting one of the world's most populated river basins.
The pollution of microplastics in sediments of the Yangtze River Basin: Occurrence, distribution characteristics, and basin-scale multilevel ecological risk assessment
This study mapped microplastic pollution throughout the Yangtze River Basin in China and found an average of 611 particles per kilogram of sediment, with wide variation across locations. Smaller microplastics under 1 millimeter and fibrous shapes were most common, and contamination was closely linked to population density and human activities. The findings are concerning because the Yangtze River system provides drinking water and food resources to hundreds of millions of people.
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.
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.
A catchment-wide microplastic pollution investigation of the Yangtze River: The pollution and ecological risk of tributaries are non-negligible
Researchers conducted a large-scale survey of microplastic pollution across the entire Yangtze River catchment, including both the main river and its tributaries. They found that tributaries contributed significantly to the overall microplastic load and posed ecological risks that had been previously overlooked. The study emphasizes that effective pollution management for major river systems must account for contamination flowing in from smaller waterways.
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.
[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.
Characteristics and distribution of microplastics in shoreline sediments of the Yangtze River, main tributaries and lakes in China—From upper reaches to the estuary
Microplastic concentrations were measured in shoreline sediments from 54 sites along the Yangtze River, its tributaries, and adjoining lakes from the upper reaches to the estuary, revealing widespread contamination that generally increased toward the more urbanized lower river. The study provides one of the most spatially comprehensive surveys of Yangtze River microplastic pollution to date.
Characteristics and Distribution of Microplastics in Shoreline Sediments of the Yangtze River, Main Tributaries and Lakes in China—From Upper Reaches to the Estuary
Scientists measured microplastic concentrations in sediments along 54 sites spanning the Yangtze River system in China, from the upper reaches to the estuary. Microplastics were found throughout, with higher concentrations near urban and industrial areas, showing how large rivers distribute plastic pollution across vast distances.
Occurrence and fate of microplastic debris in middle and lower reaches of the Yangtze River – From inland to the sea
A large-scale survey along the middle and lower Yangtze River found microplastics throughout the water column and sediments, with concentrations increasing toward the river mouth and a clear trend of microplastics moving from inland sources toward the sea. The study provides field evidence for rivers as major pathways for microplastic transport from land to ocean.
Distribution Characteristics of Microplastics in Surface Seawater off the Yangtze River Estuary Section and Analysis of Ecological Risk Assessment
Researchers surveyed microplastic contamination in surface seawater near the Yangtze River estuary across four seasons in 2017 and 2019. They found microplastics at all sampling stations, with abundance varying by season and influenced by river discharge and ocean currents. The study provides baseline data on microplastic pollution levels in this ecologically important estuarine region of China.
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.
Suspended microplastics in the surface water of the Yangtze Estuary System, China: First observations on occurrence, distribution
Researchers measured suspended microplastic concentrations in surface water across the Yangtze Estuary system in China, finding spatial gradients that reflected inputs from the Yangtze River and local coastal sources.
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.
Small microplastic particles dominate Yangtze River particulate pollution
Annual field monitoring of microplastic fluxes in the Yangtze River estuary found that small particles dominated the plastic load and that abundance was spatially and temporally heterogeneous, providing the first systematic estimate of the river's annual plastic contribution to the ocean.
[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 in Pearl River Estuary and Yangtze River Estuary, China: Occurrence, fragmentation and pollution risk
Researchers compared microplastic pollution in the Pearl River Estuary and Yangtze River Estuary in China using identical sampling and analysis methods. The Yangtze River Estuary had nearly ten times more microplastics, dominated by polypropylene and polyethylene fragments, with higher levels of particle fragmentation suggesting more advanced degradation. Both estuaries were primarily contaminated with small microplastics under 300 micrometers, indicating these important waterways are transporting substantial quantities of tiny plastic particles to the ocean.
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.