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61,005 resultsShowing papers similar to Characterization of plastic debris from surface waters of the eastern Arabian Sea–Indian Ocean
ClearSeasonal 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.
Identification and physico-chemical characterization of microplastics in marine aerosols over the northeast Arabian Sea
Researchers collected and analyzed airborne microplastics over the northeast Arabian Sea during two sampling campaigns and found microplastics present in marine aerosols at all locations. Fibers were the most common form, primarily made of polyethylene and polypropylene, likely originating from land-based sources transported by wind. The study provides important baseline data on atmospheric microplastic pollution over open ocean regions that had not been previously measured.
Plastics in surface water of southern coastal belt of Sri Lanka (Northern Indian Ocean): Distribution and characterization by FTIR
Researchers investigated plastic pollution in coastal surface waters across 12 regions in southern Sri Lanka, finding an overall mean microplastic density of 17.45 items per cubic metre with filaments as the most common morphology. FTIR characterisation confirmed the polymer types present, with blue-coloured particles being the most abundant across sampling locations.
Prevalence of microplastics in the marine waters of Qatar
Researchers documented the first evidence of microplastic occurrence in Qatar's Exclusive Economic Zone, identifying 30 polymer types at an average concentration of 0.71 particles per m3 using ATR-FTIR, with polypropylene, polyethylene, and polystyrene most common and highest concentrations near oil rigs and shipping operations.
Occurrence and abundance of macro, meso and microplastics along the coasts of the Persian Gulf (case study: Bushehr Province coast)
This survey of 17 coastal stations in Iran's Bushehr Province on the Persian Gulf documented widespread plastic pollution at macro, meso, and microplastic scales, with fibers making up the majority and fragments under 500 micrometers being most common. Polyethylene, polystyrene, PET, and nylon were the dominant polymer types identified by infrared analysis. The Persian Gulf is a semi-enclosed, heavily industrialized sea, and this data establishes baseline contamination levels needed to track how pollution changes over time.
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.
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.
Distribution of surface microplastics in the pacific ocean, sea of okhotsk and sea of japan
Researchers sampled surface microplastics (0.5 to 5 mm) at 98 stations across the Pacific Ocean, Sea of Okhotsk, and Sea of Japan during an August 2023 cruise, using FT-IR ATR spectroscopy to identify polymer types among over 4,000 detected particles and map regional pollution distributions.
Plastic debris (> 500µm) concentration gradient detected across the Southwest Indian Ocean
Researchers investigated plastic debris concentration and composition across the Southwest Indian Ocean using 19 oceanographic campaigns and 153 uninhabited beach surveys, identifying a gradient in floating macroplastic distribution and characterizing the sources and polymer types of 101,055 litter items.
Detecting and measuring Microplastic pollution in Al Hoceima City's harbor, northern Morocco
Researchers investigated microplastic pollution in surface water and sediment samples collected from Al Hoceima City's harbor in northern Morocco using manta nets, core samplers, and ATR-FTIR spectroscopy. They identified polyethylene (70.2%) and polypropylene (20.5%) as dominant polymers, primarily as fibres, fragments, and films ranging from 0.10 to 6 mm, with higher concentrations in sediment than surface water.
Low Abundance of Plastic Fragments in the Surface Waters of the Red Sea
Floating plastic debris was found at relatively low abundance along 1,500 km of the Saudi Arabian Red Sea coastline, dominated by small plastic fragments. Despite lower densities than some other ocean regions, plastic pollution is present throughout this important semi-enclosed sea.
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.
Pelagic microplastics in surface water of the Eastern Indian Ocean during monsoon transition period: Abundance, distribution, and characteristics
Pelagic microplastic concentrations were measured in surface water of the eastern Indian Ocean at 36 stations during monsoon and non-monsoon seasons. The study found spatial variation linked to ocean circulation patterns, expanding knowledge of open-ocean microplastic distribution in one of the least-studied major ocean regions.
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.
Microplastics in the rivers of Gujarat (India) to the Arabian Sea: assessment of the sources, distribution, and associated environmental risk
Researchers collected water samples from the Damanganga and Tapi rivers in Gujarat, India, and from Dumas Beach, analyzing them for microplastics by µ-FTIR, SEM, and Py-GC-MS. MPs were detected at all sites, with characterization of polymer types, sizes, and shapes providing baseline data on MP contamination in rivers draining to the Arabian Sea and the associated environmental risk.
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.
Overview of monitoring methods and environmental distribution: Microplastics in the Indian Ocean
This review summarizes the current state of microplastic monitoring in the Indian Ocean, which ranks second globally for microplastic contamination. Researchers catalogued the abundance, size, shape, and polymer types found across the region, with fibers and debris being the most common forms and polyethylene, polypropylene, and polystyrene the dominant materials. The study calls for standardized sampling methods and greater collaboration among Indian Ocean nations to address this widespread pollution problem.
Mean infrared spectra of the plastic pieces within each polymer type.
Researchers surveyed plastic debris in Australian waters, finding predominantly small polyethylene and polypropylene microplastic fragments at mean concentrations of over 4,000 pieces per square kilometer of sea surface. Particle-tracking models suggest these plastics are associated with multiple ocean current systems, helping explain how microplastics spread across vast ocean areas.
Microplastics in the Eastern Arabian Sea: Decision support tools for monitoring and environmental risk reduction
Researchers quantified microplastic concentrations in the Eastern Arabian Sea, finding a mean of 0.13 particles per cubic metre (range 0.02-0.71), and used hydrodynamic and particle tracking models to assess the fate and distribution of microplastics in coastal environments. The study developed decision support tools and contamination indices to assist monitoring and environmental risk reduction strategies in the region.
Deciphering 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.
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.
Factors influencing the vertical distribution of microplastics in the beach sediments around the Ras Rakan Island, Qatar
Researchers investigated the vertical distribution of microplastics in beach sediments around Ras Rakan Island, Qatar, sampling to 30 cm depth at 9 locations and using ATR-FTIR spectroscopy to characterise plastic types, identifying key factors that control how microplastics partition through sediment layers.
Research vessel survey & assessment of surface marine microplastics: a comparative study between international water and the united arab emirates
A research vessel surveyed microplastic abundance and diversity in surface seawater from Vigo, Spain to Abu Dhabi, collecting 42 samples from international waters and 58 from UAE waters between November and December 2022. Particles in the 5-50 micrometer range dominated in both regions, constituting over 93% of detected microplastics.
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.