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61,005 resultsShowing papers similar to Assessment of persistent and emerging pollutants levels in marine bivalves in the Gulf of Suez, Egypt
ClearAssessment of Microplastics Pollution in Marine Water Along Gulf of Suez, Egypt
Researchers assessed microplastic pollution at nine beach locations along the Gulf of Suez, Egypt, identifying 1,982 microplastic debris particles in water samples via microscopy and characterizing various morphologies, providing baseline data on spatial fluctuations of microplastic contamination in this Red Sea region.
Assessment of microplastic and trace element pollution in the southeastern Mediterranean coasts, Egypt, using shellfish Arca noae as a bioindicator
Researchers found microplastics in 48% of shellfish (Arca noae) sampled from five sites along Egypt's southeastern Mediterranean coast, with polyethylene as the dominant polymer, and detected zinc, cadmium, and lead in soft tissues at concentrations exceeding maximum permissible limits.
Microplastics in marine invertebrates from the Red Sea Coast of Egypt: Abundance, composition, and risks
This is the first study to document microplastics in marine invertebrates along Egypt's Red Sea coast, examining 11 species of clams, snails, sea urchins, and sea cucumbers. Every animal sampled contained microplastics, with filter-feeding bivalves showing the highest concentrations per gram of tissue. The plastics identified were linked to tourism-related sources, highlighting how coastal recreation contributes to wildlife contamination.
Assessment of microplastic pollution in the Gulf of Suez: Abundance and polymeric composition in beach sediments
This study assessed microplastic abundance and polymer composition in sediments along the Gulf of Suez shores, identifying 268 microplastic particles with an average of 204.3 particles per kilogram of dry sediment, reflecting contamination from the region's intense shipping and industrial activities.
Quantifying microplastics pollution in the Red Sea and Gulfs of Suez and Aqaba: Insights from chemical analysis and pollution load assessment
This first comprehensive survey of microplastic pollution along Egyptian Red Sea shores found mostly low to medium levels of plastic contamination, with a marine protected area (Ras Mohamed) showing surprisingly high vulnerability. All particles were secondary fragments of weathered plastic, primarily polyethylene and polypropylene, linked mainly to maritime cargo and recreational boat traffic rather than land-based waste. The findings fill a significant geographic gap in global microplastic monitoring and highlight tourism and shipping as key management targets in this ecologically sensitive and endemic-rich region.
Source and risk assessment of heavy metals and microplastics in bivalves and coastal sediments of the Northern Persian Gulf, Hormogzan Province
Researchers assessed heavy metal contamination and microplastic distribution in coastal sediments and edible bivalves from the northern Persian Gulf in Hormozgan Province. They found varying levels of both pollutant types across sampling sites, with proximity to industrial and urban areas correlating with higher contamination. The study provides a risk assessment indicating that combined exposure to heavy metals and microplastics through seafood consumption in the region warrants monitoring.
Prevalence and risk assessment of microplastics in the Nile Delta estuaries: “The Plastic Nile” revisited
Researchers assessed microplastic prevalence and health risks in estuaries of the Nile Delta in Egypt, finding MPs in water, sediment, and seafood samples across multiple sites. Risk assessment indicated potential exposure concern for communities relying on these estuaries for food and water.
Microplastics in Kuwait marine environment: Results of first survey
Researchers conducted the first survey of microplastic pollution in Kuwait's coastal marine environment, sampling beach sediments, surface trawls, and fish and mussel gastrointestinal contents, and found surprisingly low microplastic levels compared to other global regions. The study provides baseline data for an understudied Gulf region and identifies priorities for future monitoring.
Microplastics contamination in molluscs from the northern part of the Persian Gulf
Researchers analyzed microplastic contamination in five species of mollusks from the northern Persian Gulf, including both gastropods and bivalves with different feeding strategies. They found microplastics in all species, with concentrations ranging from 0.2 to 21 particles per gram of soft tissue, and fibers were the most common type. The study indicates that microplastic contamination is widespread in Persian Gulf seafood and that filter-feeding organisms tend to accumulate more particles.
Microplastic pollution in oyster bed ecosystems: An assessment of the northern shores of the United Arab Emirates
Researchers measured microplastic contamination in oysters and surrounding sediments at five sites along the UAE coastline, finding microplastics in all sediment samples and more than half of oyster samples — with plastic fibers making up 93% of particles found. The study is the first of its kind in the region and highlights potential risks to marine food webs and seafood safety.
Microplastic distribution, abundance, and composition in the sediments, water, and fishes of the Red and Mediterranean seas, Egypt
Microplastics were found in surface water, sediment, and fish tissues across Red Sea and Mediterranean sites in Egypt, with the highest concentrations near ports and river mouths, and polyethylene and polypropylene dominating the polymer composition in both water bodies.
Microplastics in commercial molluscs from the lagoon of Bizerte (Northern Tunisia)
Researchers investigated microplastic contamination in six species of commercially harvested molluscs from the lagoon of Bizerte in northern Tunisia. They found microplastic concentrations ranging from roughly 700 to 1,500 items per kilogram of wet weight, with fibers being the most common type and polyethylene and polypropylene the main polymers detected. The results suggest widespread microplastic pollution in these commercially important shellfish, raising concerns about trophic transfer through the food web and human dietary exposure.
Microplastics in edible mussels from a southern Mediterranean lagoon: Preliminary results on seawater-mussel transfer and implications for environmental protection and seafood safety
Scientists measured microplastic levels in mussels and seawater from a southern Mediterranean lagoon in Tunisia, finding polyethylene as the dominant type, and estimated daily human intake through mussel consumption to be below current risk thresholds but warranting continued monitoring.
Abundance and distribution of environmental microplastic in edible fish and mussels from the south Mediterranean coasts
Scientists found microplastics in every fish and mussel sample examined from the Algerian Mediterranean coast, with six common plastic types identified including polypropylene and polyethylene. The contaminated species are widely consumed by local populations. This study adds to growing evidence that people eating seafood are regularly exposed to microplastics, and helps establish baseline pollution data for an understudied region.
Distribution, abundance, and composition of microplastics in market fishes from the Red and Mediterranean seas in Egypt
Researchers analyzed microplastic contamination in commercially sold fish from both the Mediterranean and Red seas in Egypt and found microplastics in 88 percent of the fish examined. Fibers were the most common particle type, and species that feed closer to the seafloor tended to have higher contamination levels. The study raises concerns about human dietary exposure to microplastics through regularly consumed market fish in the region.
Characterization and distribution of plastic particles along Alexandria beaches, Mediterranean Coast of Egypt, using microscopy and thermal analysis techniques
Researchers characterized plastic particles in sediments and surface water along Alexandria beaches in Egypt, finding mean concentrations of 389 items per kilogram dry sediment and 457 items per cubic meter in surface water. Thermogravimetric and calorimetric analysis identified 10 polymer types, with low-density polyethylene dominant, and linked contamination primarily to single-use plastic bags, detergent packaging, and seafaring activities.
Microplastics Pollution in Aquatic Environment: A Review of Abundance, Distribution, and Composition in the Egyptian Coastal Waters
This review compiles data on microplastic pollution across Egypt's Mediterranean coast, the Nile River, and the Red Sea, all of which face significant plastic contamination. Researchers found that the Mediterranean is a global hotspot for marine plastic accumulation, while the Nile acts as a major conduit for plastics entering the eastern Mediterranean basin. The study calls for more systematic monitoring to understand the full scope of microplastic pollution in Egyptian waters.
Monitoring of Microplastics in the Marine Environment and Their Ecological Risks; the Coastline of Alexandria, Egypt as a Case study
Researchers conducted the first comprehensive monitoring of microplastics along the Alexandria coastline in Egypt, sampling surface water, beach sediment, and bed sediment across five stations during two seasons in 2020 and applying the polymer hazard index and potential ecological risk index to evaluate risk. They found higher microplastic abundance in the wet season, with fiber-shaped particles dominating and beach sediment containing more microplastics than bed sediment.
Microplastics contamination in commercial fish from Alexandria City, the Mediterranean Coast of Egypt
Researchers found microplastic contamination in commercial fish samples from Alexandria City markets on the Mediterranean coast of Egypt, with MPs detected in the gastrointestinal tracts of multiple species. The study assessed potential human dietary exposure from consuming fish that had ingested plastic particles in the heavily polluted Eastern Mediterranean.
Binational survey using Mytilus galloprovincialis as a bioindicator of microplastic pollution: Insights into chemical analysis and potential risk on humans
Researchers conducted surveys of microplastic contamination in mussels from coastal sites across Morocco and Tunisia, finding plastics in 79 to 100 percent of all samples. The most common types were polyethylene and polypropylene fibers and fragments, with chemical analysis revealing the presence of associated toxic additives. The study estimates that regular mussel consumers in these regions face meaningful microplastic intake, highlighting a potential human health concern.
Towards Risk Assessments of Microplastics in Bivalve Mollusks Globally
Researchers compiled data from 22 countries to assess the risk of microplastic contamination in bivalve mollusks such as mussels and oysters. While most countries showed relatively low pollution levels, the chemical composition of the microplastics found in bivalves varied widely, with some polymers posing greater health concerns than others. The study estimates that regular consumption of contaminated bivalves could represent a meaningful pathway for human microplastic exposure.
Determination of microplastics in commercial bivalves and estimation of exposure among population in Pasir Penambang, Kuala Selangor
Researchers measured microplastic abundance and characteristics in commercial bivalves from Pasir Penambang, Malaysia, and estimated human dietary exposure, finding that regular consumption of locally sold shellfish poses a notable microplastic ingestion risk.
Risk assessments of microplastic exposure in bivalves living in the coral reefs of Vietnam
Scientists measured microplastic contamination in shellfish living in coral reefs off the coast of Vietnam, finding an average of about 5.6 microplastic particles per individual. Polyethylene and polyamide fragments smaller than 100 micrometers were the most common types found. Since bivalves are filter feeders that people eat whole, these findings mean that consuming shellfish from these reefs involves direct ingestion of microplastics.
Contamination by microplastics in oysters shows a widespread but patchy occurrence in a subtropical estuarine system
Researchers examined microplastic contamination in oysters across a subtropical estuarine system and found widespread but highly variable levels of pollution. Higher contamination generally correlated with areas of greater human activity, though unexpectedly high levels were also found in remote marine protected areas. The study found that 94 percent of oyster samples contained microplastics, suggesting these bivalves could serve as indicators of environmental contamination.