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61,005 resultsShowing papers similar to Seasonal distribution and abundance of microplastics in the coastal sediments of north eastern Arabian Sea
ClearDeciphering the seasonal dynamics of microplastic morphotypes and associated co-contaminants along the northwest coast of India
Researchers studied seasonal variations in microplastic abundance along the northwest coast of India bordering the Arabian Sea. The study found dramatically higher microplastic concentrations during monsoon season compared to pre- and post-monsoon periods, with polypropylene and high-density polyethylene as the dominant 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.
Seasonal distribution of microplastics in surface waters of the Northern Indian Ocean
Researchers documented seasonal distribution of microplastics in Northern Indian Ocean surface waters across three monsoon periods, finding polyethylene and polypropylene dominated at 83%, with fibers accounting for 86% of all particles.
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.
Type and Distribution of Microplastics in Beach Sediment along the Coast of the Eastern Gulf of Thailand
Researchers examined microplastic distribution in beach sediments along the eastern Gulf of Thailand across two monsoon seasons, finding up to 1,698 pieces/m2 at the most contaminated site with PET (39.6%) and polyamide (22.8%) as the dominant polymer types among 17 identified.
Seasonal distribution of microplastics in the surface water and sediments of the Vellar estuary, Parangipettai, southeast coast of India
Seasonal surveys of Vellar estuary on southeast India's coast found microplastics in both surface water (1.15 to 5.14 items/m3) and sediments (24.8 to 43.4 particles/kg dry weight), with fibers dominating and concentrations varying between seasons.
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.
Quantitative assessment of microplastic in sandy beaches of Gujarat state, India
Researchers quantified microplastic contamination across 20 sandy beaches on the Gujarat coast of India, finding average abundances ranging from 1.4 to 26 MPs per kilogram of sediment, with higher concentrations at beaches under greater anthropogenic pressure. Thread/fiber morphologies were the most abundant type, and the spatial distribution reflected local population density and tourist activity.
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.
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.
Characterization of plastic debris from surface waters of the eastern Arabian Sea–Indian Ocean
Researchers characterized floating plastic debris from surface waters of the eastern Arabian Sea, finding that the microplastic size fraction (0.5-5 mm) was most prevalent at over 50% of total debris, with ATR-FTIR analysis identifying polyethylene and polypropylene as dominant polymer types. The findings document widespread plastic contamination in a poorly studied region of the Indian Ocean.
Spatiotemporal distribution of microplastic debris in the surface beach sediment of the southeastern coast of bangladesh
Researchers characterized spatiotemporal distribution of microplastic debris in beach sediments along approximately 240 kilometers of Bangladesh's southeastern coastline across seven beaches, comparing monsoon and winter seasons to assess seasonal variability. The study analyzed MP abundance, polymer type, shape, size, and color to provide the first comprehensive regional baseline for this heavily populated coastal area.
Spatial and seasonal variation of microplastics and possible sources in the estuarine system from central west coast of India
Researchers collected samples from an estuarine system on India's west coast across two seasons, finding significant spatial and seasonal variation in microplastic abundance — with monsoon season delivering higher loads — and identifying local fishing activities and urban runoff as primary sources.
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.
Assessment of micro and macroplastics along the west coast of India: Abundance, distribution, polymer type and toxicity.
This study assessed the abundance and types of micro- and macroplastics on ten beaches along India's west coast, finding plastic in all locations with fragments being the most common form. Polymer analysis revealed polypropylene, polyethylene, and polystyrene as the dominant types, and toxicity testing indicated the plastic-contaminated sediments posed ecological risks.
Morphometric characteristics and spatiotemporal heterogeneity of microplastics on the north-east coast of India
Survey of surface waters along the northeast coast of India found microplastics present in all sampled water masses, with higher concentrations during the monsoon season than the post-monsoon period, and fragments and fibers making up the vast majority of particles. The seasonal pattern suggests land-based runoff is a major delivery pathway, with implications for the many coastal communities in the region that depend on these waters for fishing and livelihoods.
Microplastics particles in seafloor sediments along the Arabian Sea and the Andaman Sea continental shelves: First insight on the occurrence, identification, and characterization
This first study of seafloor sediment microplastics on the Arabian Sea and Andaman Sea continental shelves found plastic particles across all sampled stations, with fiber and fragment shapes dominated by polyethylene and polypropylene, establishing a baseline for these deep-margin environments.
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.
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.
Accumulation and distribution of microplastics in the sediment and coastal water samples of Chabahar Bay in the Oman Sea, Iran
Researchers investigated microplastic distribution in water and sediment at 10 stations in Chabahar Bay, Iran, finding average water concentrations of 218 particles/L and documenting variation in frequency, color, and polymer type across the Oman Sea coastal environment.
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.
Occurrence and distribution of microplastics in surface sediments from the Gulf of Thailand
Researchers investigated the distribution and characteristics of microplastics in surface sediments across the Gulf of Thailand, finding an average abundance of 150.4 pieces/kg dry weight with fragment shapes dominating, and observed a correlation between sediment grain size and microplastic content. The results establish baseline contamination data for this Southeast Asian coastal region.
Quantitative assessment of microplastic contamination in muddy shores of Gulf of Khambhat, India
Researchers surveyed 21 muddy shoreline sites along India's Gulf of Khambhat and found microplastic contamination at every location, with fibers and fragments being the most common shapes. Polymer analysis identified polyethylene, polypropylene, and nylon as the dominant types. This study provides baseline data on microplastic pollution in an understudied coastal region that supports fishing communities and marine biodiversity.