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61,005 resultsShowing papers similar to Accumulation and distribution of microplastics in the sediment and coastal water samples of Chabahar Bay in the Oman Sea, Iran
ClearMicroplastic 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.
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.
Microplastics in the surface seawaters of Chabahar Bay, Gulf of Oman (Makran Coasts)
Researchers conducted the first survey of microplastic pollution in the surface waters of Chabahar Bay in the Gulf of Oman. They found microplastic densities ranging up to 1.14 particles per cubic meter, with fibers being the most common shape and polyethylene and polypropylene the dominant polymer types. The highest concentrations were found near populated areas, suggesting that human activity is a major source of microplastic contamination in this coastal region.
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.
Assessing microplastic pollution in coastal sediments of the Oman Sea: ecological risk and land-use linkages
A survey of coastal sediments along the Oman Sea shoreline near Chabahar, Iran, found microplastic concentrations varied dramatically by land use—commercial port and market areas had up to 161 particles per 100 grams of sediment, while remote mangrove forests had as few as 6 particles per 100 grams. Fibers and fragments of polyethylene, polypropylene, and nylon were most common. The clear gradient from urbanized to natural areas confirms that human activity is the primary driver of coastal microplastic accumulation, and that mangrove ecosystems—despite their ecological importance—are not immune to plastic contamination.
Exploring the microplastic pollution: Unveiling origins and varieties in coastal sediments and waters of the Bushehr Province, Persian Gulf, Iran
Researchers conducted a comprehensive survey of microplastic pollution in coastal sediments and waters along the Persian Gulf in Iran. They found microplastics at all sampling sites, with the highest concentrations near petrochemical facilities and urban centers, and fibers being the most common type. The study establishes baseline pollution data for the region and links contamination levels to specific human activities.
Occurrence and spatial distribution of microplastics in sediment and fish along the Persian Gulf—a case study: Bushehr Province, Iran
Researchers investigated microplastic contamination in sediments and fish across 16 stations along the Bushehr Province coastline in the Persian Gulf, finding a mean abundance of 57.19 particles/kg in sediments — dominated by black fragments — and up to 9 microplastic particles per fish, with black particles again most prevalent.
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.
Abundances and characteristics of microplastics in core sediments of the Persian Gulf coast, Iran
Researchers sampled coastal sediments in Iran's Persian Gulf and found microplastics — including polystyrene, polyethylene, and PVC — at all six sites and at every depth down to 30 cm, averaging nearly 118 particles per kilogram of dry sediment. Fibers and fragments dominated, pointing to widespread plastic contamination from local waste mismanagement in this tidal ecosystem.
Microplastic particles in sediments and waters, south of Caspian Sea: Frequency, distribution, characteristics, and chemical composition
Researchers assessed microplastic occurrence in coastal sediments and surface waters along the southern Caspian Sea coast in Iran, finding mean concentrations of 15 items/kg in sediments and 710 items/m3 in coastal water. Fibers dominated at 97% of all MPs in both media and were predominantly black-colored, with smaller particles more prevalent in water than sediments.
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 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.
Presence of Microplastics in some commercial fish species in the northern Oman Sea, Iran
Researchers examined microplastic occurrence in the gills, gastrointestinal tracts, and skin of five commercial fish species from the northern Oman Sea in Iran across pre-monsoon and monsoon periods, finding species- and season-dependent variation in microplastic type and abundance.
Assessing the relationship between the abundance of microplastics in sediments, surface waters, and fish in the Iran southern shores
Researchers found microplastic contamination across sediments, surface waters, and four fish species along Iran's Persian Gulf coast, with concentrations of 190 items/kg in sediments and 9.28 items/km in surface waters, though no correlation was observed between MP abundance across the different environmental compartments.
Characteristics, behaviour and fluxes of microplastics in the coastal boundary zones of the Persian Gulf and Oman Sea
This study characterized the behavior and fluxes of microplastics in the coastal boundary zone, tracking how MPs move between nearshore waters, beach sediments, and the open sea under different hydrodynamic conditions.
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.
Microplastic pollution on the Persian Gulf shoreline: A case study of Bandar Abbas city, Hormozgan Province, Iran
Beach microplastic abundance was measured across different land-use types along the Bandar Abbas coastline in Iran, finding an average of 3,252 ± 2,766 particles/m² with expanded polystyrene, PET, PP, and PE as dominant polymers, and significantly higher contamination near urbanized areas. The study demonstrates that land use intensity directly influences coastal microplastic deposition in the Persian Gulf.
Spatial distribution of microplastics in Persian Gulf marine environments
A spatial survey of microplastics in Persian Gulf marine sediments found widespread contamination, with concentrations varying by location and depth. The study adds to evidence that the Gulf's semi-enclosed, heavily trafficked waters are a significant repository for microplastic pollution.
Microplastics in the Mediterranean Sea: Deposition in coastal shallow sediments, spatial variation and preferential grain size
Researchers sampled Mediterranean coastal shallow sediments and found microplastics throughout, with concentrations and polymer types reflecting land-based inputs and showing that coastal sediments are a significant regional reservoir for plastic debris.
Scientific studies on microplastics pollution in Iran: An in-depth review of the published articles
This review synthesized published data on microplastic pollution across Iran's ecosystems, finding that 70% of studies focused on the Persian Gulf and Oman Sea with minimal coverage of terrestrial environments, and documenting the presence of microplastics in commercial salt and bottled mineral water consumed by the Iranian population.
Investigating Microplastics in the Mediterranean Coastal Areas – Case Study of Al-Hoceima Bay, Morocco
Researchers investigated microplastic presence and distribution in the semi-enclosed Al-Hoceima Bay, Morocco, characterizing contamination patterns in Mediterranean coastal waters affected by anthropogenic activities along the coastline.
An evaluation of surface micro- and mesoplastic pollution in pelagic ecosystems of the Western Mediterranean Sea
Researchers found that micro- and mesoplastic debris were widely and uniformly distributed across the Western Mediterranean Sea, with average surface concentrations of approximately 130,000 microplastic particles per km2 and 5,700 mesoplastic particles per km2. Fragment morphology and polymer composition analysis indicated a predominantly land-based origin for the debris.
An integrated assessment of microplastic pollution in coastal surface water and sediment of Japan
Researchers conducted a comprehensive survey of microplastic pollution across 14 coastal locations around Japan from Hokkaido to Okinawa, measuring concentrations of 288.7 g/km2 in surface water and 1,185 kg/km2 in sediment and characterizing polymer types, shapes, and size distributions.
Presence, Spatial Distribution, and Characteristics of Microplastics in Beach Sediments Along the Northwestern Moroccan Mediterranean Coast
Researchers surveyed fourteen beaches along the northwestern Moroccan Mediterranean coast and found microplastics in every sediment sample, averaging about 59 particles per kilogram of dry sand. Fibers were the dominant shape at nearly 78%, with tourism, fishing, and wastewater discharges identified as the most likely pollution sources. The findings indicate moderate but widespread microplastic contamination along this coastline.