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61,005 resultsShowing papers similar to Water Quality Evaluation, Spatial Distribution Characteristics, and Source Analysis of Pollutants in Wanquan River, China
ClearEvaluation of nitrate pollution sources in surface water across the typical rural-urban interface: a case study of Wen-Rui Tang River, China
Researchers identified the main sources of nitrate pollution in a rural-urban Chinese river, finding that human sewage and agricultural runoff were the primary contributors. While focused on nitrogen pollution, the study illustrates how mixed land use creates complex water quality challenges in rivers that also carry microplastics.
Microplastics pollution in inland freshwaters of China: A case study in urban surface waters of Wuhan, China
Researchers characterized microplastic pollution in inland freshwaters across urban suburban areas of China, finding contamination that reflected land use intensity and population density in the surrounding catchments.
Distribution Characteristics of Microplastics in Domestic Sewage Waters: A Case Study in Guilin City, China
Researchers collected water samples from 20 sewage outlets in Guilin, China, to characterize microplastic abundance, morphology, and size distribution, and applied multivariate statistical analysis to identify hydrochemical factors influencing microplastic concentrations. The case study provides spatial data on domestic sewage as a microplastic source in a Chinese urban river 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.
Identifying the characteristics of and factors driving spatiotemporal water quality variations in the Yellow River Basin, China, from 2008 to 2020
This study analyzed water quality data from the Yellow River Basin in China from 2008 to 2020, identifying pollution sources and spatial trends across the watershed. While focused on general water quality rather than microplastics specifically, such assessments provide important context for understanding pollution dynamics in large river systems.
[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.
Microplastics in inland freshwater environments with different regional functions: A case study on the Chengdu Plain
Researchers surveyed microplastic pollution in the Minjiang River as it flows through the Chengdu Plain in China, examining abundance, composition, shape, and size in both water and sediments. The study found serious microplastic contamination in urban sections of the river, with differences linked to regional functions such as industrial, agricultural, and residential land use patterns.
Characteristics and source-pathway of microplastics in freshwater system of China: A review
This national-scale review examines microplastic characteristics and source-pathway dynamics in Chinese freshwater systems including rivers, lakes, and reservoirs, synthesizing data showing that urban runoff, textile washing, and wastewater discharge are dominant sources. The authors identify key knowledge gaps in understanding microplastic transport from inland waters to the ocean in the world's largest plastic-producing country.
Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China
This paper is not about microplastic pollution. It analyzes the hydrochemical characteristics of river water in the Jinjiang Watershed in China, identifying rock weathering, mining, agricultural runoff, and domestic pollution as the main factors influencing water chemistry.
Microplastic pollution in urban rivers within China's Danxia landforms: Spatial distribution characteristics, migration, and risk assessment
Researchers surveyed microplastic contamination in surface water, sediment, and groundwater across six cities in China's ecologically fragile Danxia landform region. They found moderate levels of contamination, with urban wastewater and agricultural runoff identified as the primary sources. The study suggests that these unique and ecologically sensitive landscapes face real microplastic pollution risks tied to nearby human activity.
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.
Distribution and characteristics of microplastics in an urban river: The response to urban waste management
Microplastics were detected throughout surface water and sediments of an urban Chinese river (Nanming River) in both dry and wet seasons, with 25 different polymer types identified and the highest concentrations near sewage discharge points and plastic waste dump sites. The study shows that urban river management practices — particularly wastewater handling — are critical in controlling how much plastic reaches downstream ecosystems.
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.
Microplastics profile in a typical urban river in Beijing
Researchers profiled microplastic pollution along the Qing River, a typical urban river in Beijing receiving effluent from four wastewater treatment plants, investigating how discharged microplastics distribute and transform as they move through an urban riverine system.
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.
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.
Temporal and Spatial Distribution Characteristics of Microplastics and Their Influencing Factors in the Lincheng River, Zhoushan City, China
Researchers analyzed temporal and spatial distribution patterns of microplastics in the Lincheng River in Zhoushan, China, finding that microplastic abundance is influenced by seasonal runoff, land use, and proximity to urban and industrial sources before entering the ocean.
The effects of land use types on microplastics in river water: A case study on the mainstream of the Wei River, China
Researchers studied how different land use types along China's Wei River, a major tributary of the Yellow River, influence microplastic concentrations in the water. The study found that urban and agricultural areas contributed more microplastics than other land use types, with seasonal variations also playing a role, highlighting how human activities directly shape plastic pollution patterns in river systems.
Microplastic in tropical island estuaries in China: Source identification and management framework development
Researchers found surprisingly higher microplastic concentrations in the less-urbanized Wanquan River Estuary compared to the Nandu River Estuary in Hainan Island, China, suggesting that tourism and agricultural activities may contribute more significantly to microplastic pollution than urbanization alone.
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.
Spatial distribution and potential sources of microplastics in the Songhua River flowing through urban centers in Northeast China
Microplastics were sampled from river water and wastewater treatment plant effluents at five cities along the Songhua River in northeast China, finding polyethylene and polypropylene as dominant polymers and identifying urban WWTPs as the primary point sources of microplastic input to the river.
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.
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.
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.