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61,005 resultsShowing papers similar to Microplastics particles in seafloor sediments along the Arabian Sea and the Andaman Sea continental shelves: First insight on the occurrence, identification, and characterization
ClearFate of microplastics in deep-sea sediments and its influencing factors: Evidence from the Eastern Indian Ocean
Surface sediments from 26 sites in the deep basin of the Eastern Indian Ocean were analyzed for microplastics, finding concentrations ranging widely and influenced by water depth, distance from land, and ocean current patterns. The study extends deep-sea microplastic monitoring to the Indian Ocean and identifies oceanographic transport as a key control on plastic distribution.
Seasonal distribution and abundance of microplastics in the coastal sediments of north eastern Arabian Sea
Researchers documented seasonal variation in microplastic abundance along India's North Eastern Arabian Sea coast, finding 4,400 to 15,300 items per kilogram of dry sediment with fibers as the dominant form across ten identified polymer types.
Preliminary Study on Abundance of Microplastic in Sediments and Water Samples Along the Coast of Pakistan (Sindh and Balochistan)-Northern Arabian Sea
Researchers found high levels of microplastic contamination along 25 locations on Pakistan's Arabian Sea coastline, with mean concentrations of 582 particles/L in seawater and 987 particles/kg in sediment, and fibers comprising up to 99% of all detected microplastics.
Microplastic contaminants in the sediment of the north coasts of the Persian Gulf and Gulf of Oman
Researchers characterized microplastic abundances and properties in coastal sediments of the Persian Gulf and Gulf of Oman, finding concentrations ranging from 10 to 45 particles per kilogram with an average of 655 pieces per kilogram and a predominance of black fibers and high-density polymers. Raman analysis confirmed polymer identities and revealed a negative depth gradient with decreasing MP concentrations from coastal to deeper waters.
The first report on emerged microplastics in deep-sea sediment: Insights from the Central Indian Ocean Basin
Researchers reported the first detection of emerged (beach-cast) microplastics in deep-sea sediments from an understudied region, characterizing particle types, polymer composition, and likely transport pathways. The findings confirm that even remote deep-sea environments receive microplastic inputs.
Microplastic occurrence in the deep-sea sediment of the Indonesian Throughflow, Banggai Sea
This first investigation of microplastics in deep-sea sediments in Indonesian waters found microplastic contamination in the Banggai Sea, with abundance strongly decreasing with distance from the coast and PET and PE identified as dominant polymer types.
Distribution and characterization of microplastic from reef associated surface sediments of Vembar group of Islands, Gulf of Mannar, India
Researchers collected reef sediment samples from three islands in the Vembar group in the Gulf of Mannar and found microplastic contamination dominated by polypropylene (most abundant), nylon (32.3%), polyethylene (19.6%), and polystyrene (5.7%), with irregular and fiber shapes predominating and Upputhanni Island showing the highest particle count at 154 particles.
Distribution and characterization of microplastics in marine sediments from coastal and offshore in South Korea
Researchers conducted an intensive survey of microplastic levels and distribution in marine sediments from coastal areas, recognizing the seafloor as the ultimate repository for plastic particles. Microplastic concentrations in sediments were highest near urban and industrial coastlines, with fibers and fragments as the most common types.
Occurrence, distribution and composition of microplastics in the sediments of South Andaman beaches
Microplastics were found at all eight sampling stations on beaches of the South Andaman Islands, India, with an average of 414 particles per kilogram of sediment and 13 polymer types identified. Poor solid waste management, tourism, and maritime activity were identified as the main sources.
Distribution and characterization of microplastics in beach sand from three different Indian coastal environments
Beach sands from three locations on the Indian coast were analyzed for microplastics, finding concentrations of 45–220 particles/kg dry sand with polyethylene (43%) as the dominant polymer, followed by PET and polystyrene. The study establishes baseline contamination data for Indian beaches and demonstrates consistent polymer profiles across geographically distinct coastal environments.
Prevalence of microplastics in the sediments of Odisha beaches, southeastern coast of India
This first study of microplastic prevalence on beaches of the Odisha coast in southeastern India documented widespread contamination, with fiber and fragment types dominated by polypropylene and polyethylene across multiple beach sites.
Distribution and characterization of microplastics in beach sediments from Karnataka (India) coastal environments
Researchers surveyed five beaches along the Arabian Sea coast in Karnataka, India, and found microplastic concentrations ranging from 264 to 1,002 particles per kilogram of dry sand. The majority of particles were small fragments less than 1 millimeter in size, and microscopy revealed signs of extensive environmental weathering. The study provides important baseline data on microplastic contamination along India's western coastline.
Occurrence and spatial distribution of microplastics in the intertidal sediments along the Oman Sea
This study documented microplastic contamination in intertidal sediments along seven locations on the Oman Sea coast, finding average levels of about 315 particles per kilogram of dry sediment. Fragments and fibers dominated, with polypropylene as the most common polymer identified by Raman spectroscopy. The results confirm that microplastic pollution has reached the Oman Sea coastline and call for regional regulations to reduce plastic inputs into this relatively understudied marine environment.
A large-scale study of microplastic abundance in sediment cores from the UK continental shelf and slope
Microplastic abundance was surveyed in sediment cores from three areas of the UK continental shelf, establishing a baseline pollution profile across contrasting coastal environments. Concentrations varied considerably by location and depth, with the data providing a foundation for future risk assessments of seafloor contamination.
Ubiquity of microplastics in coastal seafloor sediments
Researchers applied a novel method to quantify microplastic concentrations in seafloor sediments from 42 coastal sites across southeastern Australia. They found microplastics in all samples at an average concentration of 3.4 particles per milliliter of sediment, predominantly as filaments. The study demonstrates that microplastic contamination of coastal seafloor sediments is ubiquitous and that hydrological and sediment properties influence deposition patterns.
Abundance, characteristics and surface degradation features of microplastics in beach sediments of five coastal areas in Tamil Nadu, India
Microplastic abundance and surface weathering features were characterized in beach sediments from five coastal areas in Tamil Nadu, India, with concentrations reaching up to 439 particles per kg and polyethylene and polypropylene dominating.
Distribution and characterization of microplastics in marine sediments from coastal and offshore in South Korea
Researchers conducted an intensive survey of microplastic distribution and characterization in marine sediments from coastal areas, confirming the seafloor as a long-term sink for plastic pollution. Contamination was highest near urban coastlines, with fibers and fragments accumulating preferentially in low-energy depositional environments.
Comparison of Microplastic abundance in varying depths of deep-sea sediments, Bay of Bengal
Researchers measured microplastic concentrations in deep-sea sediment samples from the Bay of Bengal at depths of 225 to 1,070 meters, finding the highest concentrations at intermediate depths. The findings add to evidence that microplastics have penetrated into deep-sea environments far from the surface.
Occurrence, characterization, and source delineation of microplastics in the coastal waters and shelf sediments of the central east coast of India, Bay of Bengal
This study characterized microplastics in surface water and shelf sediments along 1,200 km of India's east coast, finding average concentrations of 5.3 million particles per square kilometer in surface water and 209 particles per kilogram in sediments. Fibers dominated surface water while fragments dominated sediments, with riverine inputs and fishing activities identified as primary sources.
The occurrence of microplastic contamination in littoral sediments of the Persian Gulf, Iran
Researchers surveyed littoral sediments of the Persian Gulf for microplastics, finding plastic particles across all sampling sites with a variety of polymer types. The study provides early baseline contamination data for a region with major petrochemical and industrial activity.
Microplastics in the sediments along the eastern Arabian Sea shelf: Distribution, governing factors and risk assessment
Researchers mapped microplastic distribution in sediments along the eastern Arabian Sea shelf across seven coastal transects, finding the highest concentrations off Mumbai at 2500 particles per kilogram. The study found that northern shelf regions had greater contamination than central and southern areas, with microplastic distribution influenced by proximity to urban centers, river inputs, and ocean currents.
Microplastic pollution in the littoral sediments of the northern part of the Oman Sea
Researchers conducted the first assessment of microplastic pollution in littoral sediments of the northern Oman Sea, finding MPs at all eight sampling stations at abundances of 138.3 to 930.3 particles per kg. Polyethylene was the dominant polymer, with fibers and fragments the most common shapes, establishing a baseline and underscoring the need for improved waste management and environmental protection in the region.
Microplastic Contaminants in the Sediment of the East Coast of Saudi Arabia
Researchers conducted the first measurement of microplastic contamination in sediments along four beaches on Saudi Arabia's east coast, finding 586 microplastic particles with fibers being the dominant shape (96%) and polyethylene terephthalate the most common polymer type, with abundance varying between tidal zones.
Distribution and environmental risk assessment of microplastics in continental shelf sediments in the southern East China Sea: A high-spatial-resolution survey
Researchers conducted a high-spatial-resolution survey of microplastics in surface sediments across the southern East China Sea continental shelf, finding omnipresent contamination dominated by polyethylene fibers and fragments, with concentrations elevated near urban coastal areas.