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61,005 resultsShowing papers similar to Abundance and characteristics of microplastics in the Wanquan River estuary, Hainan Island
ClearMicroplastic 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.
Occurrence and spatial distribution of microplastics, and their correlation with petroleum in coastal waters of Hainan Island, China
Researchers investigated microplastics in coastal waters of Hainan Island, China, finding higher concentrations near harbors and industrial zones with a significant positive correlation between microplastic abundance and petroleum contamination, suggesting shared pollution sources.
Spatial variation of floatable plastic debris and microplastics in the Pearl River Estuary, South China
Researchers quantified and characterized microplastics and large plastic debris in surface water from the Inner Lingding Bay of the Pearl River Estuary, finding both types present at all sites with mean abundances of 2.376 and 0.110 items per square meter respectively, predominantly as fibers from multiple sources.
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 surface seawater of Sanggou Bay, China: Occurrence, source and inventory
Researchers surveyed microplastic pollution in the surface seawater of Sanggou Bay, China, finding average abundances of 20.06 items per litre dominated by polyethylene fragments smaller than 0.5 mm, and estimating that approximately 62.76% of the microplastic inventory originated from local aquaculture and fishing activities.
Karakteristik Mikroplastik pada Sedimen dan Air laut di Muara Sungai Wulan Demak
Researchers characterized microplastics in sediment and seawater at the Wulan River Estuary in Indonesia, finding the highest abundances at stations near the river mouth and identifying fibers as the dominant shape, with FTIR confirming multiple polymer types including polypropylene and polyethylene.
Distribution characteristics of microplastics in the seawater and sediment: A case study in Jiaozhou Bay, China
Researchers surveyed microplastic pollution in the seawater and sediments of Jiaozhou Bay, a semi-enclosed bay in China heavily impacted by human activity. They found microplastic concentrations of 20 to 120 items per cubic meter in seawater and 7 to 25 items per kilogram in sediment, with fibers being the dominant shape and PET the most common polymer. The study found positive correlations between microplastic levels in water and sediment, and higher concentrations near areas with residual ocean currents.
Riverine microplastics derived from mulch film in Hainan Island: Occurrence, source and fate
Researchers investigated the occurrence, sources, and fate of microplastics derived from agricultural mulch films in rivers of Hainan Island, China, finding that mulch film residues are a significant contributor to riverine microplastic pollution with implications for downstream coastal environments.
Study 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.
Abundance and Characteristics of Microplastics in Seawater and Corals From Reef Region of Sanya Bay, China
Researchers quantified microplastic abundance in seawater and coral samples from Sanya Bay, China, finding 15-22 items per liter in seawater and up to 3.6 items per coral polyp, with fibers and fragments as the predominant particle types in reef ecosystems.
Microplastic in three urban estuaries, China
Researchers surveyed three urban estuaries in China and found microplastics throughout, with concentrations and types reflecting the combined influence of surrounding city density, stormwater runoff, and tidal mixing.
[Distribution Characteristics of Microplastics in Surface Water and Sediments of Haizhou Bay, Lianyungang].
Researchers characterized microplastic pollution in surface water and sediments of Haizhou Bay, a small-to-medium-sized inshore bay in Lianyungang, China, documenting the main polymer types, abundances, and spatial distribution patterns to fill a gap in knowledge about microplastics in smaller Chinese coastal environments.
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.
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.
Microplastic pollution in surface seawater and beach sand from the shore of Rayong province, Thailand: Distribution, characterization, and ecological risk assessment
Researchers surveyed microplastic pollution in beach sand and seawater along Rayong province, Thailand, finding average concentrations of 339 particles per kilogram in sand and 1,781 particles per cubic meter in seawater, with polyethylene as the most common polymer type.
Spatial-temporal distribution of microplastics in surface water and sediments of Maozhou River within Guangdong-Hong Kong-Macao Greater Bay Area
Researchers mapped the spatial and seasonal distribution of microplastics along the Maozhou River in China's Greater Bay Area. They found that microplastic concentrations were highest near industrial areas and downstream sites, with dry season levels significantly exceeding wet season levels. The dominant polymer types were polyethylene and polystyrene, and metals were detected on the surfaces of recovered microplastic particles.
Microplastic pollution in North Yellow Sea, China: Observations on occurrence, distribution and identification
Researchers surveyed microplastic pollution across the North Yellow Sea, documenting their occurrence, distribution, and characteristics, and finding widespread contamination with higher concentrations in coastal areas and near river inputs.
Temporal and spatial distribution of microplastic in the sediment of the Han River, South Korea
The first comprehensive survey of microplastic temporal and spatial distribution in Han River sediment in South Korea found microplastics at all sites with concentrations varying by season and proximity to urban areas, with polyethylene and polypropylene fragments and fibers as the dominant types.
Temporal and Spatial Distribution of Microplastics in a Coastal Region of the Pearl River Estuary, China
Researchers found that microplastic abundance in the Pearl River Estuary coastal region was 1.85-fold higher during the rainy season than the dry season, with concentrations decreasing from river to estuary to open sea. Fibers and fragments dominated, with gray, white, and green particles most common across sampling sites.
Distribution of microplastics in surface water of the lower Yellow River near estuary
Researchers characterized microplastics in surface water of the lower Yellow River near its estuary, finding that 93.12% were fibers, 87.94% were under 200 μm, and the main polymers were polyethylene, polypropylene, and polystyrene. The study provides baseline data on the types and distribution of microplastics entering the Bohai Sea from one of China's major rivers.
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.
Microplastics in surface water and sediments of Chongming Island in the Yangtze Estuary, China
This study surveyed microplastic abundance and characteristics in surface water and sediments around Chongming Island in the Yangtze Estuary, China, finding widespread contamination with fibers and fragments dominating. The Yangtze Estuary serves as a major conduit for microplastics moving from freshwater to the marine environment.
A case study of distribution and characteristics of microplastics in surface water and sediments of the seas around Shenzhen, southern coastal area of China
This study characterized microplastics in surface water and sediments at 14 sites in the seas around Shenzhen, China, finding concentrations of 3.8 to 7.8 particles per liter in water and 26,000 to 100,000 particles per kilogram in sediments. Fibers and films dominated, polyethylene was the main polymer, and ecological risk was assessed as high, with microplastic abundance correlating with urbanization rate.
Microplastic Accumulation in Hong Kong’s Marine Sediment: Spatial Pattern and Potential Sources
Researchers conducted a comprehensive survey of microplastics in marine sediments across Hong Kong's waters. They found microplastics at every sampling site, with fibers and fragments being the most common forms and polypropylene and polyethylene the dominant plastics. The spatial patterns suggest that coastal urbanization and water circulation are key factors driving where microplastics accumulate in sediments.