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61,005 resultsShowing papers similar to Seasonal Variations in Water Quality and Microplastic Contamination in the Surma River, Bangladesh: Implications for Aquatic Health and Human Safety
ClearOccurrence and risk assessment of microplastics in surface water, sediment, and biota of Surma River, Bangladesh
Researchers conducted the first comprehensive study of microplastic pollution across water, sediment, and aquatic organisms in the Surma River in northeastern Bangladesh. They found microplastics in all three compartments, with fibers being the most common shape in water and biological samples, while fragments dominated in sediments. Pollution risk indices indicated substantial contamination levels, highlighting the need for better plastic waste management in the region.
Microplastics pollution in the Surma River, Bangladesh: A rising hazard to upstream water quality and aquatic life
This first-ever assessment of microplastic pollution in Bangladesh's Surma River found contamination in water, sediment, fish, crustaceans, and bivalves, with concentrations ranging widely across six sampling sites. Microplastics smaller than 200 micrometers were the most common, and areas near urban centers showed the worst water quality, highlighting how plastic waste from human activity enters waterways and accumulates in organisms people eat.
Characterization and spatial distribution of microplastics in Surma river, Bangladesh: Assessing water and sediment dynamics
Researchers characterized the abundance, distribution, and types of microplastics in the water and sediments of the Surma River in Bangladesh. They found widespread microplastic contamination, with fibers being the dominant particle shape, linked to nearby textile and urban sources. The study provides baseline data on microplastic pollution in a major South Asian river system and highlights the need for mitigation strategies.
The seasonal variation and ecological risk of microplastics in the Lower Ganges River, Bangladesh
Researchers characterized seasonal variation in microplastic abundance and polymer composition in the lower Ganges River, finding that monsoon flows dramatically increase microplastic loads and that dry season concentrations reflect local urban pollution.
Spatio-temporal distribution and ecological risks of microplastics in surface water and sediments of Bangshi River
A seasonal survey of the Bangshi River in Bangladesh found microplastics at all 10 sampling sites, with concentrations spiking during monsoon season as runoff flushed plastics from urban and industrial areas into the river. Ecological risk assessments classified both the water and sediments in the most extreme hazard category, signalling urgent risks to the river's aquatic life and the communities that depend on it.
Macroplastics Pollution in the Surma River in Bangladesh: A Threat to Fish Diversity and Freshwater Ecosystems
Researchers assessed macroplastic pollution along the Surma River in Bangladesh, finding significant accumulation of plastic debris — dominated by packaging materials — that correlates with reduced fish diversity, with surveys indicating low public awareness of the pollution problem.
Characterization, distribution, and risk assessment of microplastic in fish and sediment from the longest river of Bangladesh
Researchers characterized microplastic contamination in fish and sediment from the Brahmaputra River in Bangladesh, the country's longest river. They found microplastics in all fish and sediment samples, with fibers being the most common type, and bottom-dwelling fish species containing more particles than those living near the surface. The study provides important baseline data on freshwater microplastic pollution in a major South Asian river system.
Abundance, distribution and composition of microplastics in sediment and fish species from an Urban River of Bangladesh
Researchers examined microplastic contamination in both river sediment and fish from the Turag River in Bangladesh, which separates an industrial city from the capital Dhaka. They found microplastics in all sediment and fish gut samples, with fragment-type particles dominating in sediment and fibers most common in fish. The study highlights that urban rivers in densely populated areas can serve as significant conduits of microplastic exposure for both aquatic life and the people who consume river fish.
Microplastic pollution in the water and sediment of the Karnaphuli River, Bangladesh: An ecological risk assessment
Researchers assessed the spatial and seasonal distribution of microplastics along the Karnaphuli River in Chattogram, Bangladesh. Microplastic concentrations were higher in sediment than surface water and elevated in downstream locations, with fibers and fragments of PET, polyethylene, and polystyrene being the most common types, and the ecological risk assessment rated the pollution as Category I, indicating a significant pollution load.
Assessing year-round microplastic loading in the lower Brahmaputra River: A threat to aquatic environment
Scientists tracked microplastic levels in the lower Brahmaputra River in Bangladesh throughout the year and estimated that 23.6 kilograms, or trillions of particles, flow through annually. Contamination was highest during the wet season due to rainfall washing plastics into the river, and risk assessments showed potential harm to freshwater species. Since the Brahmaputra provides water and fish for millions of people, this persistent microplastic contamination is a public health concern.
Microplastic Occurrences in Freshwater Fish of Bangladesh
This review synthesizes research on microplastic contamination found in freshwater fish across Bangladesh, where rapid population growth and urbanization have led to significant plastic pollution. Researchers found that fibers are the most commonly detected microplastic type in fish tissues, raising concerns about impacts on gut health and immune function. The study highlights the need for more comprehensive monitoring given Bangladesh's heavy reliance on freshwater fish as a dietary staple.
Prevalence of microplastics in commonly consumed fish species of the river Old Brahmaputra, Bangladesh
Researchers found microplastics in nearly 59% of edible fish from Bangladesh's Old Brahmaputra river, with polyethylene fibers and pellets dominating, and ingestion rates linked to fish size, feeding behavior, and downstream location.
Pervasiveness and characteristics of microplastics in surface water and sediment of the Buriganga River, Bangladesh
Researchers investigated microplastic contamination in the Buriganga River in Bangladesh, finding concentrations of 4.33 to 43.67 items per liter in surface water, with fibers and fragments as dominant types linked to textile industries and urban waste discharge in the Dhaka megacity.
Microplastic Pollution in Indigenous Fish From the Padma River, Bangladesh: A Case Study
Researchers examined indigenous fish species from the Padma River in Bangladesh and found microplastics in the gastrointestinal tracts of all species studied, with fibers being the dominant type. The abundance and types of microplastics varied across species, reflecting differences in feeding habits and habitat. The findings highlight the widespread presence of microplastic contamination in an important inland waterway and its potential impact on food security in the region.
Pervasiveness of microplastics in the gastrointestinal tract of some selected fish species from Turag River alongside the capital city of Bangladesh
Researchers found microplastics in all three species of fish collected from the Turag River near Dhaka, Bangladesh, with fiber being the dominant type at 89-93% of all particles found. The most common plastics identified were polypropylene, polystyrene, and low-density polyethylene, with the majority of particles smaller than 0.5 mm. Since these freshwater fish are a major protein source for local communities, the contamination raises concerns about microplastic exposure through the food supply in urban areas of developing countries.
Unveiling Microplastics in Commercial Brackish Water Fishes from the Lower Meghna River Estuary of Bangladesh
Researchers found microplastics in the digestive tracts of three commonly eaten fish species from the Meghna River estuary in Bangladesh, with one species averaging nearly 23 particles per fish. Fibers were the dominant shape, and several of the plastic types identified scored high on a polymer hazard index. Since these fish are a dietary staple for local populations, the study highlights a direct route of microplastic exposure for millions of people in Bangladesh.
Characterization and Quantification of Microplastics in Surface Water of Shitalakshya River, Bangladesh
Researchers characterized and quantified microplastics in surface water samples from the Shitalakshya River in Bangladesh, finding an average concentration of 1.52 particles per liter. Fibers made up over 68% of particles found, with black being the most common color and polyethylene the dominant polymer type. The findings indicate that this industrial-area river is becoming increasingly contaminated with microplastics, posing ecological risks to the urban river ecosystem.
Microplastic pollution in two industrial locations of the Karnaphuli River, Bangladesh: insights on abundance, types, and characteristics
Researchers surveyed microplastic pollution in surface water at two industrial sites along the Karnaphuli River in Bangladesh, finding significant contamination with fibers being the most common type. The study suggests that industrial activity is a major contributor to microplastic pollution in this river system, with polymer types and concentrations varying between the two locations.
Microplastics in freshwater wild and farmed fish species of Bangladesh
Researchers evaluated microplastic contamination in freshwater wild and farmed fish species across multiple rivers and farms in Bangladesh, comparing contamination levels between wild-caught and aquaculture-raised fish of the same species.
Surface water, sediment, and biota: The first multi-compartment analysis of microplastics in the Karnafully river, Bangladesh
Researchers conducted the first multi-compartment analysis of microplastics in the Karnafully River in Bangladesh, finding contamination across surface water, sediment, and biota, with fibers and small particles under 1 mm dominating all sample types.
Assessment of microplastics in coastal ecosystem of Bangladesh
Researchers surveyed microplastic contamination in water, beach sand, and fish along two major coastal areas of Bangladesh. Microplastics were found in every sample type, with fibers being the most common shape and polyethylene and polypropylene the dominant plastic types. Fish accumulated microplastics in their digestive tracts and body tissues, raising concerns about human exposure through seafood consumption in the region.
Seasonal assessment and characterization of microplastics in two urban (Balu) and peri-urban (Shitalakshya) rivers of Bangladesh
This study assessed microplastic contamination in the Shitalakshya and Balu rivers of Bangladesh across seasons, finding that sediments contained far higher concentrations than water samples, with the Balu River reaching up to 5,673 MPs per kg of dry sediment during the dry season.
Assessment of microplastics pollution in aquatic species (fish, crab, and snail), water, and sediment from the Buriganga River, Bangladesh: An ecological risk appraisals
Researchers assessed microplastic pollution across water, sediment, fish, crab, and snail from Bangladesh's Buriganga River, finding widespread contamination with fibers and fragments along with elevated heavy metal concentrations on microplastic surfaces.
Potential Ecological Risk and Characterization of Floating Microplastics in the Surface Water of a Highly Urbanized Large River in Southeast Asia
Researchers characterized floating microplastics in the Jamuna River in Bangladesh, finding significant contamination likely originating from industrial, domestic, and hospital waste, and assessed the ecological risks posed by the identified polymer types to aquatic organisms.