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61,005 resultsShowing papers similar to Spatial, seasonal and ecological risk assessment of microplastics in sediment and surface water along the Thoothukudi, south Tamil Nadu, south east India
ClearSeasonal and spatial variations in the distribution pattern, sources and impacts of microplastics along different coastal zones of Tamil Nadu, India
Surveys of four coastal zones in Tamil Nadu, India found microplastics in both sediments and water at all sites, with the highest concentrations during the monsoon season when river runoff carries more plastic waste into the ocean. The researchers identified 16–23 different polymer types per season and found that weathered particles were carrying hazardous heavy metals on their surfaces. The study provides one of the most detailed spatiotemporal profiles of coastal microplastic contamination in India, underscoring the need for urgent pollution control measures in heavily populated 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.
Seasonal distribution, source apportionment and risk exposure of microplastic contaminants along the Muttukadu backwater estuary, Tamil Nadu, India
Researchers surveyed microplastic contamination in a Tamil Nadu estuary in India across wet and dry seasons, finding that microplastic levels were higher during the wet season and that fragments and fibers from single-use plastics, fishing gear, and boats were the dominant sources. Ecological risk assessment classified the estuary as facing medium to high risk, highlighting the urgent need for waste reduction policies and regular monitoring of coastal waterways in India.
Microplastic pollution and its implicated risks in the estuarine environment of Tamil Nadu, India
Researchers investigated microplastic pollution across 19 estuaries in Tamil Nadu, India, measuring contamination in water, sediment, and marine organisms. They found microplastic levels were higher during monsoon season due to stormwater discharge, and estimated that local residents may ingest approximately 781 microplastic items through fish and 2,809 through shellfish annually. The study suggests that estuarine microplastic pollution poses meaningful human exposure risks through seafood consumption.
Seasonal 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.
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, A Threat to Human Health: A Case Study at Thoothukudi, South India
A field study at Thoothukudi, a coastal city in southern India, found microplastics in beach sediments at all seven sampling sites, with fibers and fragments being the most common forms. The results highlight that microplastic pollution is reaching even relatively understudied coastlines in South Asia, with implications for the health of local marine ecosystems and fishing communities.
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.
Spatiotemporal variations of microplastics in the surface sediments of a tropical mangrove ecosystem in south-western India
Researchers studied microplastic distribution in mangrove sediments along India's southwestern coast across different seasons and found contamination present year-round. Microplastic concentrations varied seasonally, with higher levels detected during certain periods linked to monsoon runoff and human activity. The study highlights that mangrove ecosystems, which provide critical environmental services, are accumulating microplastic pollution from surrounding areas.
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.
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.
Comparative study on the status of microplastics in different functional areas of Tuticorin, Southeast coast of India
Researchers compared microplastic abundance, composition, and associated heavy metal contamination across different functional zones (industrial, fishing, tourism) of Tuticorin coastal waters in India, finding that spatial and seasonal factors significantly affect microplastic distribution and risk.
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.
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.
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.
Status of Microplastic Accumulation in Water and Sediments of Selected Estuarine Ecosystem of Southern Kerala, India
Researchers measured microplastic levels in water and sediment from estuaries in southern Kerala, India, finding significant contamination in both habitats. The study identifies these coastal estuaries as accumulation zones for microplastic pollution, posing risks to local aquatic life and fishing communities.
Abundance and distribution of subsurface microfibres and seabed macrolitter in Thoothukudi, Gulf of Mannar, South-east coast of India
This study measured the abundance and distribution of microfibers and larger plastic litter in coastal waters and seafloor sediments off Thoothukudi, India, finding widespread contamination. Microfibers were present throughout inshore waters, contributing to the growing body of evidence for plastic contamination along India's coastlines.
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.
Microplastics along the beaches of southeast coast of India
Microplastic debris was surveyed at 25 beach locations along 1,076 km of Tamil Nadu coastline in India, finding higher abundances at the high tide line than low tide line and higher concentrations near rivers than tourism or fishing beaches. The study provides systematic baseline data on microplastic distribution along the southeast coast of India and identifies riverine inputs as a primary delivery mechanism.
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.
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.
Seasonal variation of microplastics in tropical mangrove waters of South-western India
Researchers measured seasonal variations in microplastic contamination within tropical mangrove waters in South-Western India. They found that post-monsoon concentrations were highest at 1.42 microplastics per liter, while monsoon season had the lowest levels at 0.19 per liter. Fibers were the most common particle type, with polymers including polypropylene, PET, and polyethylene identified, likely originating from local tourism, aquaculture, and marine industries.
Microplastics accumulation in pelagic and benthic species along the Thoothukudi coast, South Tamil Nadu, India
Researchers surveyed microplastic contamination in the digestive tracts of fish and shellfish along the Thoothukudi coast in southern India. They found microplastics in both open-water and bottom-dwelling species, with bottom-dwellers accumulating slightly more particles, predominantly polyethylene fibers. The findings confirm that microplastic contamination is widespread across marine habitats in the region and underline the need for better plastic waste management.
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.