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61,005 resultsShowing papers similar to Characteristics and ecological risks of microplastic pollution in a tropical drinking water source reservoir in Hainan province, China
ClearStudy on Pollution Characteristics and Ecological Risks of Microplastics in Ningyuan River
Researchers surveyed microplastic contamination in the Ningyuan River in Hainan Province, China, finding plastic particles in surface water samples. The study characterized microplastic abundance, types, sizes, and shapes, and conducted an ecological risk assessment, contributing to understanding of microplastic pollution in China's tropical river systems.
Microplastic and microcystin in tropical drinking water reservoir: pollution characteristics and human health risk assessment
Researchers surveyed microplastic and cyanobacterial toxin levels in a tropical drinking water reservoir in Vietnam over a one-year period. They found microplastics at all sampling sites, predominantly polypropylene and polyethylene fibers, with high polymer hazard scores despite low overall pollution levels. The co-occurrence of microplastics and microcystin toxins across the reservoir highlights the need for research on how these contaminants interact in freshwater drinking water sources.
Distribution and risk assessment of microplastics in a source water reservoir, Central China
Researchers measured microplastic levels at different water depths in a reservoir in central China used as a drinking water source. They found 2 to 14 particles per liter, with polypropylene and polyethylene being the most common types. Middle and bottom water layers showed higher risk levels due to more toxic polymer types, raising concerns about the safety of source water used for drinking.
Spatial–Temporal Distribution and Ecological Risk Assessment of Microplastic Pollution of Inland Fishing Ground in the Ubolratana Reservoir, Thailand
Researchers assessed the spatial and seasonal distribution of microplastics in surface water and sediment across 13 stations of the Ubolratana Reservoir in Thailand. They found that microplastic abundance ranged widely, with seasonal variations and tourism activity significantly influencing contamination levels. The pollution load index reached extremely high levels in tourist areas during the dry season, suggesting that human recreational activity is a major driver of reservoir microplastic pollution.
Microplastics in surface waters and sediments of the Three Gorges Reservoir, China
Researchers sampled surface waters and sediments of the Three Gorges Reservoir in China and found microplastic contamination throughout, with concentrations influenced by water flow dynamics and proximity to human settlements.
Impact of microplastics on microbial community in sediments of the Huangjinxia Reservoir—water source of a water diversion project in western China
Researchers examined microplastic contamination and its effects on microbial communities in sediments of the Huangjinxia Reservoir in western China, investigating how microplastic presence alters the composition and function of microbial assemblages in this drinking water source.
Occurrence, stability and source identification of small size microplastics in the Jiayan reservoir, China
Microplastics across a full size range were found in a Chinese reservoir, with small-sized particles (less than 300 micrometers) dominating and showing seasonal variation linked to rainfall and runoff, highlighting reservoirs as underappreciated sinks and sources of fine microplastic pollution.
Occurrence Patterns and Pollution Risk of Microplastics in Surface Sediments and Sediment Cores of the Three Gorges Reservoir, China
Researchers examined the occurrence, distribution, and pollution risk of microplastics in surface sediments and sediment cores of China's Three Gorges Reservoir across different water seasons. The study found distinct seasonal patterns in microplastic abundance and composition in both surface sediments and vertical core profiles, confirming the reservoir acts as a significant sink for microplastic contamination.
[Composition and Distribution Characteristics of Microplastics in Danjiangkou Reservoir and Its Tributaries].
Researchers analyzed the types, abundance, and distribution of microplastics in Danjiangkou Reservoir, a first-class drinking water source protection area in China. Finding microplastics in a protected drinking water source underscores the need for improved upstream plastic waste management and water treatment to protect public health.
Abundance and characteristics of microplastics in the Wanquan River estuary, Hainan Island
Researchers characterized microplastic pollution in the Wanquan River estuary in Hainan Island, finding high abundances in both surface water and sediment, with fibers as the dominant shape and polyethylene as the primary polymer type.
Seasonal variations of microplastics in surface water and sediment in an inland river drinking water source in southern China
Researchers surveyed microplastic contamination in surface water and sediment of a southern China river used as a drinking water source during both flooding and dry seasons. They found microplastic abundances were generally higher during the dry period, with fibers being the dominant type and polyethylene the most common polymer. The study suggests that seasonal hydrological changes significantly affect microplastic distribution in inland drinking water sources.
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.
Spatiotemporal variation in microplastic contamination along a subtropical reservoir shoreline
Researchers tracked microplastic contamination along the shoreline of a subtropical reservoir over two years and found that microplastic abundance was higher near urban areas and varied with season, with storm-related inputs creating significant temporal spikes.
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.
[Spatial and Temporal Variation Characterization and Variability of Microplastics in Water-borne River and Reservoir].
A study comparing microplastic levels in a river and a reservoir used as drinking water sources in Guangdong, China found meaningful differences in contamination patterns across seasons and locations. The findings underscore that drinking water source protection strategies need to account for microplastic pollution, as these particles can enter the water supply before treatment.
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.
Microplastic pollution responses to spatial and seasonal variations and water level management in a polymictic tropical reservoir (São Paulo, Brazil)
Researchers assessed microplastic pollution in water and sediment from the Guarapiranga Reservoir in Brazil, which supplies drinking water to over five million people. They found that microplastic concentrations were higher near urbanized areas and during the dry season, with water management operations like reservoir drawdowns influencing particle distribution. The study highlights the connection between urban land use, seasonal patterns, and microplastic contamination in critical drinking water sources.
Microplastic pollution in sediments of tropical shallow lakes
Researchers found microplastics in all sediment samples from 48 tropical shallow lakes across a climatic gradient, with fibres dominating over fragments and polyester being the most common polymer, indicating widespread plastic contamination even in inland freshwater ecosystems.
Risk levels of microplastic pollution in surface water and sediments at Ba Be Lake
Researchers assessed microplastic pollution in surface water and sediments of Ba Be Lake, Vietnam, documenting MP concentrations, polymer types, and spatial distribution to characterize contamination levels and ecological risk in this protected freshwater lake ecosystem.
Manuscript prepared for submission to environmental toxicology and pharmacology pollution in drinking water source areas: Microplastics in the Danjiangkou Reservoir, China
Researchers investigated microplastic contamination in surface water and sediments of the Danjiangkou Reservoir, the source area for China's South-to-North Water Diversion Project, finding microplastics in all samples at abundances ranging from 467 to 15,017 particles/m3 in water and 15 to 40 particles/kg in sediment. Fibrous particles smaller than 2 mm dominated, with micro-Raman spectroscopy identifying polypropylene as the primary polymer type.
Microplastic Contamination in Water and Sediment at Maninjau Lake, Indonesia
Researchers quantified microplastic contamination in surface water and sediment across 10 locations in Maninjau Lake, Indonesia, finding abundances ranging from 65.63 to 195.31 particles/m3 in water and 199.52 to 7,000 particles/kg dry weight in sediment. Fiber, film, fragment, and granule shapes were identified, highlighting contamination risks to a lake critical for water supply, hydroelectric energy, and aquaculture.
Microplastic pollution of water and sediment from the Guarapiranga Reservoir, Metropolitan Region of São Paulo, Brazil
Researchers measured microplastic contamination in water and sediment from the Guarapiranga Reservoir in the Sao Paulo metropolitan region of Brazil, a major drinking water source. The study found diverse microplastic types and raises concerns about plastic pollution in urban water supply systems.
Spatial heterogeneity of microplastics and ecological risk assessment based on detection of seawater and fish in typical coastal region in Hainan
Spatial heterogeneity in microplastic concentrations across a study area was documented and linked to ecological risk, with hotspots identified near point sources and areas of low water flow. The risk assessment framework developed here can help prioritize sites for remediation or regulatory attention.
Ecological Risk Assessment of Microplastics in Luoma Lake and its Connecting Rivers
Researchers systematically investigated microplastic contamination in Luoma Lake and its connecting rivers in China, finding microplastics in all water samples at concentrations ranging from 3.2 to 12.2 particles per liter. The most common microplastics were small particles under 100 micrometers, primarily PET and polyethylene debris and granules. Ecological risk assessments indicated low overall pollution levels but moderate polymer hazard, providing baseline data for drinking water source protection.