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61,005 resultsShowing papers similar to Vertical distribution of microplastics in the sediment profiles of the Lake Taihu, eastern China
ClearHorizontal and vertical distribution of microplastics in Gehu Lake, China
Researchers analyzed the horizontal and vertical distribution of microplastics at different water depths across Gehu Lake in China, finding microplastics present throughout all depth layers with surface water showing the highest abundance (3.13 plus or minus 0.32 items/L) and bottom water the lowest (1.03 plus or minus 0.14 items/L). They found that most microplastic particles ranged from 100 to 500 micrometers in size with fibrous shapes predominating, and identified polyethylene terephthalate and polypropylene as the main polymer types in the lake.
Microplastic distribution in large shallow lake sediments: Variations with offshore distance and implications for microbial communities
Researchers analyzed microplastic distribution in sediments of Taihu Lake at varying distances from shore and examined the effects on microbial communities. They found that microplastic abundance decreased with increasing distance from the shoreline, ranging from 240 to 1,120 items per kilogram. The study suggests that microplastic contamination in lake sediments can significantly alter the composition and diversity of local microbial communities.
Distribution and Sedimentation of Microplastics in Taihu Lake
Researchers studied microplastic distribution and sedimentation in Taihu Lake, one of China's largest freshwater lakes, and its surrounding rivers. Microplastics were found throughout the lake with higher concentrations near urban and industrial areas, raising concerns for water quality and aquatic life.
Distribution and sedimentation of microplastics in Taihu Lake
Researchers surveyed microplastic abundance in water, sediment, and inflowing rivers of Taihu Lake, China's third-largest freshwater lake, finding widespread contamination with fibers as the dominant type and higher concentrations near urban and agricultural shorelines.
Microplastic pollution in Taihu Lake: Spatial distribution from the lake inlet to the lake centre and vertical stratification in the water column
Researchers mapped microplastic distribution in Taihu Lake from the inlet to the center and at different water depths. They found that concentrations were highest near the inlet and decreased toward the lake center, while vertical distribution showed accumulation patterns influenced by water movement and particle density. The study improves understanding of how microplastics move and settle within large freshwater lake systems.
Horizontal and vertical distribution of microplastics in the Wuliangsuhai Lake sediment, northern China
Horizontal and vertical distribution of microplastics in sediments of Wuliangsuhai Lake in Inner Mongolia, China was investigated to understand accumulation patterns in a shallow lake ecosystem. Microplastics were found throughout the lake sediments with depth-dependent vertical profiles, revealing the lake as a substantial reservoir for plastic particle accumulation.
Distribution and characteristics of microplastics in the sediments of Poyang Lake, China
Researchers found microplastic contamination in sediments across Poyang Lake, China, with abundances ranging from 11 to 3,153 items per kilogram dry weight, and identified significant spatial variability linked to human activity and hydrological conditions.
Microplastics in Taihu Lake, China
Researchers surveyed Taihu Lake in China — one of the largest freshwater lakes in the country — and found microplastics throughout, with concentrations and polymer composition reflecting surrounding urban and industrial inputs.
Distribution of microplastics in benthic sediments of Qinghai Lake on the Tibetan Plateau, China
Researchers mapped the distribution of microplastics in the bottom sediments of Qinghai Lake on the Tibetan Plateau, sampling from shore to center. The study found microplastics throughout the lake sediments even in this remote, high-altitude location, with abundance patterns influenced by factors such as tourism activity and water currents rather than simply decreasing from shore to center.
Vertical distribution of microplastics in sediment columns along the coastline of China
Sediment column samples collected from 11 provinces along China's coastline revealed that microplastic pollution decreases with depth and is more diverse in vertical profiles than in surface sediments, with fibers dominating. Estuarine and coastal areas showed higher contamination than mangrove reserves.
Vertical distribution characteristics of microplastics and bacterial communities in the sediment columns of Jianhu lake in China
Researchers examined microplastic abundance, morphology, and polymer types alongside bacterial community composition in sediment columns (0-60 cm depth) of Jianhu Lake, China, finding microplastic concentrations of 624-3050 particles/kg with rayon, PET, and SBS as dominant polymers, and revealing correlations between microplastic characteristics and bacterial community structure via co-occurrence network analysis.
Levels And Distribution Characteristics of Microplastics In Water And Sediment of A Typical Shallow Lake In Northern China
Scientists measured microplastic levels in the water and sediment of Baiyangdian Lake, a shallow lake in northern China. They found between 1,000 and 20,000 microplastic particles per cubic meter of water and up to 2,200 particles per kilogram of sediment. Despite pollution control efforts, microplastics remain widespread in this lake ecosystem.
Vertical distribution of microplastics in bay sediment reflecting effects of sedimentation dynamics and anthropogenic activities
Researchers studied the vertical distribution of microplastics in sediment cores from the semi-enclosed Jiaozhou Bay, China, finding six polymer types with distribution patterns reflecting historical changes in plastic production and local pollution sources. Sediment depth was found to correlate with the era of plastic contamination, providing a record of microplastic accumulation over time.
Vertical distribution and weathering characteristic of microplastics in soil profile of different land use types
Researchers investigated the vertical distribution and weathering characteristics of microplastics in soil profiles across four land use types near Taihu Lake in China. The study found that microplastic abundance was highest in paddy fields and decreased linearly with soil depth, with weathering patterns suggesting that microplastics undergo significant changes as they migrate through soil layers.
Insights into the horizontal and vertical profiles of microplastics in a river emptying into the sea affected by intensive anthropogenic activities in Northern China
This first vertical profile study of microplastics in a river in northern China found significant differences in microplastic concentration between surface, intermediate, and bottom waters, with higher abundances near the riverbed, suggesting that surface-only sampling underestimates total microplastic loads.
Spatiotemporal and vertical distribution characteristics and ecological risks of microplastics in typical shallow lakes in northern China
Researchers studied how microplastics are distributed across water, the viscous sublayer, and sediment layers in Baiyangdian, a shallow lake in northern China, during both wet and dry seasons. They found that microplastic abundance was highest in residential areas and that the vertical distribution pattern reversed between seasons. The study highlights that seasonal water level changes significantly affect where microplastics accumulate in shallow lake ecosystems.
[Characteristics of Microplastic Pollution in Sediment of Silty Coast in Culture Bay].
Microplastic characteristics and depth profiles were analyzed in deep sediments from a silty mudflat near a Haizhou Bay aquaculture area, providing rare data on vertical microplastic distribution in coastal sediment cores.
Comprehensive analysis of microplastics in water, sediment and fish from a large recreational lake
Researchers surveyed microplastics in water, sediment, and fish from a large recreational lake in China, finding MPs across all sampled compartments with higher concentrations near tourist facilities and boat launch areas, raising concerns about human exposure through lake recreation and consumption of contaminated fish.
Seasonal disparities in vertical distributions of microplastics and driving factors in a deep reservoir
Researchers studied microplastic distribution at different depths in a deep reservoir in southwest China and found that concentrations generally increased from the water surface to the bottom. The study revealed seasonal differences in vertical transport patterns, with low-density polymers like polyethylene dominating surface waters while denser particles accumulated in deeper layers.
Depth profiles of microplastics in sediments from inland water to coast and their influential factors
This review examines how microplastics settle and accumulate in deep sediment layers from rivers to coastal areas, revealing that contamination extends well below the surface. Generally, smaller microplastics are found at greater depths, and the abundance varies significantly from site to site. Understanding how microplastics bury themselves in sediments is important because these hidden reservoirs could release particles back into water supplies over time, affecting both ecosystems and human 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.
Vertical microplastic distribution in sediments of Fuhe River estuary to Baiyangdian Wetland in Northern China
Researchers studied how microplastics are distributed at different depths in river sediments near a major wetland in northern China, where treated wastewater is a primary water source. They found that microplastic concentrations were highest in the top layer of sediment and decreased with depth, with polyethylene and polypropylene being the most common types. The spatial distribution was closely linked to nearby human activities, with more contaminated areas found near population centers.
Spatial distribution of microplastics in volcanic lake water and sediments: Relationships with depth and sediment grain size
Microplastics were mapped in both water and sediment across depth gradients in a volcanic lake, finding that plastic concentrations increased with depth in sediments and were related to sediment grain size. The study provides rare data on microplastic distribution in volcanic lake systems and highlights sediment accumulation as a long-term plastic sink.
Vertical distribution, accumulation, and characteristics of microplastics in mangrove sediment in China
Sediment cores up to 100 cm deep were collected from six mangrove forests in China to document the vertical distribution and historical record of microplastic accumulation. The Futian mangrove in Shenzhen had the highest microplastic abundance up to 3,123 particles per kilogram, and the earliest plastic-bearing sediment layers date back to China's plastic industry development in the 1980s.