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61,005 resultsShowing papers similar to Ecological risk assessment and characterization of microplastics in the beach sediments of southeast coast of India
ClearSeasonal variation, polymer hazard risk and controlling factors of microplastics in beach sediments along the southeast coast of India
Researchers investigated microplastic contamination at six beaches along India's southeast coast, comparing seasonal variation and hazard risk. They found that polyethylene and polypropylene fibers were the most common types, likely originating from fishing, textile, and urban activities. Although overall contamination levels were low, the presence of hazardous polymers like PVC and polystyrene contributed to a very high ecological risk index for marine life.
Spatial distribution, morphological characteristics, and risk assessment of microplastics in the beach sediments of Odisha Coast, India
A large survey of 34 beach sites along the Odisha coast of India found an average of 948 microplastic particles per kilogram of sediment, with fibers making up nearly 99% of particles, and ecological risk indices rating the coast as 'extremely dangerous.' This is one of the first spatially extensive assessments of microplastic pollution on India's eastern coastline, establishing a critical baseline for a densely populated and ecologically important region. The high polymer hazard scores—driven by PET, PP, and PE—point to urgent need for pollution reduction and policy intervention.
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 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.
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.
The extent of microplastic pollution along the eastern coast of India: Focussing on marine waters, beach sand, and fish
Researchers assessed microplastic contamination across water, sand, and fish from seven major beaches along India's eastern coast, finding widespread pollution dominated by polyethylene and polystyrene with hazard indices indicating potential ecological risk.
Microplastics' occurrence, distribution, and chemical toxicity in backwater sediments from Puducherry Coast, Southeast India
Researchers measured microplastic concentrations in sediment cores from three sites along India's Puducherry coast, finding over 100 microplastic particles per square centimeter near the surface — with fibers and fragments made of PE, PP, and PET being most common — and high pollution risk scores at all sites.
Assessment of potential ecological risk of microplastics in the coastal sediments of India: A meta-analysis
This meta-analysis assesses the ecological risk of microplastics in coastal sediments along India's coastline, finding high hazard levels in several areas. The presence of harmful plastic polymers in coastal sediments is concerning because these areas are important for fishing and seafood harvesting that feeds millions of people.
Occurrence, spatial distribution, and risk assessment of microplastics in surface water and sediments of Saint Martin Island in the Bay of Bengal
Researchers surveyed microplastic occurrence, spatial distribution, and pollution risk in surface water and beach sediments of Saint Martin Island in the Bay of Bengal, finding 3,166 particles/kg in beach sediments and elevated polymer risk indices indicating significant coastline pollution despite a low overall risk category.
Microplastics pollution in tropical estuary (Muttukadu Backwater), Southeast Coast of India: Occurrence, distribution characteristics, potential sources and ecological risk assessment
Scientists surveyed microplastic contamination in the water and sediments of a tropical estuary on India's southeast coast. They found moderate to high levels of microplastic pollution, with common polymers like polyethylene and polystyrene contributing the most to ecological risk. The presence of trace metals on microplastic surfaces suggests these particles may also serve as carriers for heavy metal contamination in coastal ecosystems.
Vertical profiling of microplastic contamination in coastal sediments of Tamil Nadu, Southeast India
Researchers investigated vertical and horizontal stratification of microplastics in coastal sediment cores from three sites in Tamil Nadu, India, finding the highest contamination at Rameswaram with up to 2,800 particles per kilogram of dry sediment, dominated by fibers at 59.1%. High-density polymers such as PET and PA were disproportionately enriched in deeper sediment layers reflecting density-driven sinking, while site-specific risk assessments confirmed Rameswaram as the greatest ecological risk area.
Micro-plastic pollution along the Bay of Bengal coastal stretch of Tamil Nadu, South India
Researchers quantified microplastic particles in water column, wet sediment, and dry sand samples from Marina Beach, Chennai, India — one of the world longest urban beaches — using optical microscopy. Fibrous microplastics were dominant across all matrices (52-79%), with concentrations indicating significant pollution along this heavily urbanised coastline.
Quantification and polymer characterization of sediment microplastics along the Golden beach, Puri, India
Microplastics were found in beach sediments at one of India's most popular tourist beaches in Puri, with an average of 731 particles per kilogram of sediment. The presence of multiple polymer types, including polyethylene and polystyrene, reflects the diverse sources of plastic pollution at heavily visited coastal sites.
Sampling and Analysis of Microplastics in the Coastal Environments of Sri Lanka: Estuaries of the Kelani River to Mahaoya
Microplastics were found in both beach sediments and coastal seawater along 42 kilometers of Sri Lanka's western coastline, with polyethylene, polypropylene, and polystyrene being the most common types. The results document significant plastic contamination along the coast of a densely populated South Asian nation, raising concerns about exposure for coastal communities and marine life in the Indian Ocean region.
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.
Characteristics of microplastics in the beach sediments of Marina tourist beach, Chennai, India
Researchers conducted the first baseline study of microplastic pollution in beach sediments at Marina and Pattinapakkam beaches in Chennai, India. They identified an average of 459 and 297 microplastic particles at the two sites respectively, with polyethylene being the dominant polymer type. The study suggests that both human activities and natural coastal processes contribute to microplastic accumulation at these popular tourist beaches.
An assessment of microplastic contamination in beach sediment of Maharashtra State, India, with special reference to anthropogenic activities
Researchers quantified microplastic contamination across 25 beaches along the Maharashtra coast of India, finding widespread pollution with significant variation between sites. They identified microplastic concentrations correlated with anthropogenic activities near each sampling location. The study provides baseline data on coastal microplastic pollution in this densely populated region and highlights the connection between human activity and beach contamination levels.
Microplastic distribution patterns in Kappil Beach sediments, Kerala
Beach sediment samples from Kappil, Kerala in India revealed 766 microplastic particles dominated by nylon fibers (78%), along with polyethylene and polystyrene, with the majority smaller than 1 mm. Risk assessments classified contamination as moderate to high, suggesting active fragmentation of larger plastic debris is ongoing. This baseline data is valuable for tracking pollution trends in Indian coastal ecosystems where fishing and tourism create significant plastic inputs.
Risk assessments of microplastics accumulated in estuarine sediments at Cuddalore, Tamil Nadu, southeast coast of India
This study measured microplastic abundance and composition in sediments from two estuaries in Cuddalore, India, finding 36-52 particles per kg dry weight with fibers dominant, and conducted ecological risk assessments highlighting potential hazards to estuarine organisms.
Spatial, seasonal and ecological risk assessment of microplastics in sediment and surface water along the Thoothukudi, south Tamil Nadu, south east India
Researchers assessed the spatial and seasonal variation of microplastics in sediment and surface water along the Thoothukudi coast in southeastern India. The study found significant differences in microplastic abundance across sampling sites and seasons, with monsoon periods recording the highest concentrations, and conducted an ecological risk assessment of the contamination levels.
Macro-, meso- and microplastic debris in the beaches of Tuticorin district, Southeast coast of India
Researchers surveyed eight sandy beaches along the Tuticorin district coast in southeast India for macro-, meso-, and microplastic debris. The study found microplastic concentrations ranging from 25 to 83 items per square meter, with contamination levels varying by site depending on the intensity of fishing and other human activities, confirming widespread plastic pollution along India's southeastern coastline.
Potential Ecological Risk Assessment Studies Based on Source and Distribution of Microplastics from the Surface Sediments of Tropical Backwaters, Kerala, India
Researchers characterized microplastic pollution in surface sediments of three tropical estuaries along the southwest coast of Kerala, India, finding 407 total particles and conducting ecological risk assessment to evaluate hazard levels from microplastic accumulation.
Microplastic pollution in surface sediments of Coromandel coastline, South-East Coast, India: Diversity index, carbonyl index, pollution load index, risk fraction and MPs inventory
Researchers surveyed microplastic pollution across a 1,076-kilometer stretch of India's Coromandel coastline, using multiple indices to assess abundance, degradation, and ecological risk. They found that microplastic levels varied significantly between wet and dry seasons, with dry season samples showing higher concentrations. The study provides a comprehensive baseline assessment of microplastic contamination along one of India's most extensive coastal regions.
Contamination of microplastics, surface morphology and risk assessment in beaches along the Thoothukudi coast, Gulf of Mannar region
Researchers assessed microplastic contamination in beach sediments along the Thoothukudi coast in India, finding widespread presence of fragments and films with high ecological risk scores, alongside surface morphological analysis revealing weathering and chemical changes consistent with long-term environmental exposure.