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61,005 resultsShowing papers similar to Microplastic Pollution in Typical Subtropical Rivers in Eastern China: A Case Study of the Feiyun River Basin
ClearPollution 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.
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.
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.
Microplastics pollution in selected rivers from Southeast Asia
Researchers surveyed microplastic pollution in rivers across Southeast Asia, a region with high plastic waste discharge but limited monitoring data, documenting the distribution and characteristics of microplastics in these understudied waterways.
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.
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.
Riverine microplastic pollution matters: A case study in the Zhangjiang River of Southeastern China
Researchers conducted the first survey of microplastic pollution in the Zhangjiang River in southeastern China, finding concentrations ranging from 50 to 725 particles per cubic meter. Polypropylene and polyethylene were the dominant polymer types, accounting for about 75% of all particles, with fragments being the most common shape. The study establishes baseline data on riverine microplastic pollution in this watershed and its potential role in transporting plastics to coastal waters.
Characteristics, Contamination Levels, and Ecosystem Risk Assessment of Microplastics in Surface Water of a Highly Urbanized River from a Developing Country
Researchers characterized microplastic contamination in an urban river near a megacity in a developing country, finding concentrations of 350 to 660 particles per cubic meter of water. Polyethylene and polypropylene from household and municipal waste were the most common types, and a risk assessment found concerning contamination levels at several sampling sites. The study highlights how rivers in developing nations can serve as major pathways for microplastics to reach the ocean and enter the food chain.
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.
Comparative Assessment of Microplastics in Surface Water and Sediments of Meishe River, Haikou, China
Researchers assessed microplastic pollution in China's Meishe River, finding contamination levels of 3-10 items per liter in surface water and 61-205 items per 100g in sediments, predominantly polyethylene fibers that may eventually flow into nearby seas.
Unraveling Microplastic Presence in Freshwater and Sediment of Rejoso River, Indonesia
Researchers investigated microplastic presence in water and sediment of the Rejoso River in Indonesia across 12 sampling sites, characterizing the types, abundances, and distribution patterns of microplastic particles in this tropical freshwater system.
[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.
Microplastic Contamination and Ecological Risk Assessment in Tropical Riverine Surface Water of Selangor River Basin, Malaysia
Researchers analyzed microplastic abundance and risk in the Selangor River Basin in Malaysia, collecting surface water from 25 sites and detecting 361 particles with an average density of 1.44 particles per liter. Stereomicroscopy and FTIR confirmed the presence of multiple polymer types across upstream, tributary, and downstream zones.
A multidimensional approach for microplastics monitoring in two major tropical river basins, Malaysia
Researchers conducted a multidimensional assessment of microplastic distribution in surface waters of two major Malaysian river basins, providing much-needed field data on microplastic emissions from Asian rivers known to be major contributors to ocean pollution.
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 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 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.
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.
Assessment of Small-Scale Microplastics Abundance and Characterization in Urban River: A Case Study in Metro River, Indonesia
Researchers assessed microplastic contamination in the Metro River in Indonesia, finding that abundance and characteristics varied by land use type, with urban areas showing higher concentrations of fragments and fibers in this rapidly developing region.
Pollution characteristics and source analysis of microplastics in the Qiantang River in southeastern China
Researchers found that microplastic abundance in the Qiantang River near Hangzhou, China, ranged from 1.5 to 9.4 items per liter, with higher levels during dry periods and concentrations correlated with local GDP and industrial manufacturing activity.
[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.
Measurement, quantification, and potential risk of microplastics in the mainstream of the Pearl River (Xijiang River) and its estuary, Southern China
Microplastic distribution was surveyed across the mainstream and estuary of China's Pearl River, finding higher concentrations near urban centers and establishing a detailed inventory of microplastic abundance, polymer types, and potential sources in this major waterway.
Microplastics Occurrence in Surface Waters and Sediments in Five River Mouths of Manila Bay
Researchers documented microplastic contamination in water and sediments at five river mouths of Manila Bay in the Philippines, finding fragments and fibers as the dominant types, with polyethylene and polypropylene the most common polymers.
The occurrence and abundance of microplastics in surface water and sediment of the West River downstream, in the south of China
Researchers surveyed microplastic contamination in surface water and sediment of the West River downstream in southern China. They found microplastics in all samples, with concentrations ranging widely and fibers being the dominant shape. The study suggests that the downstream section of the West River serves as both a conduit and accumulation zone for microplastic pollution heading toward coastal waters.