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61,005 resultsShowing papers similar to Identificação de polímeros de microplásticos encontrados no trato digestivo de peixes do Lago de Amatitlán, Guatemala
ClearIdentification of microplastic polymers found in the digestive tract of fish from Lake Amatitlán, Guatemala
FTIR-ATR spectroscopy was used to identify microplastic polymers extracted from the gastrointestinal tracts of 36 fish from Lake Amatitlán, Guatemala, analyzing 68 particles representing 10% of total extracted microplastics. The study determined the predominant polymer types present in fish from this lake and assessed likely contamination sources.
Quantification and Characterisation of Microplastics in Fish and Surface Water at Melayu River, Johor
Researchers quantified and characterized microplastics in fish gastrointestinal tracts and surface water from Melayu River, Johor, using density separation and ATR-FTIR spectroscopy. They found microplastics in all three fish species sampled, with fibers dominant in fish and films dominant in water, and identified PET and polyethylene as the primary polymer types.
Microplastic contamination in fresh fish: insights from wet market in Selangor, Malaysia
Researchers examined microplastic contamination in the gut and muscle tissue of four commercially important fish species from a Malaysian wet market, using ATR-FTIR spectroscopy for polymer identification. Microplastics were detected in all species, with the highest abundance found in the gut of Lutjanus erythropterus, raising food safety concerns.
Microplastics in Nile tilapia (Oreochromis niloticus) from Lake Amatitlán
Microplastics were found in Nile tilapia from Lake Amatitlan, Guatemala, with fibers as the dominant type, confirming that even fish from lakes receiving untreated wastewater in Central America are contaminated and that the fish represent a potential vector for human microplastic ingestion.
Identification and Characterization of Micro and Mesoplastics Isolated from Commercially Important Marine Fishes of Pulicat Lake, Tamil Nadu, India
This study identified micro- and mesoplastics in the digestive tracts of 15 commercially important fish species from an Indian coastal lake, using infrared spectroscopy to confirm plastic polymer types. The presence of plastics in food fish raises concerns about human dietary exposure through seafood consumption.
Additives, plasticizers, small microplastics (<100 μm), and other microlitter components in the gastrointestinal tract of commercial teleost fish: Method of extraction, purification, quantification, and characterization using Micro-FTIR
Researchers developed a Micro-FTIR extraction and identification method for small microplastics (under 100 µm) and plastic additives in the gastrointestinal tracts of five commercial Mediterranean fish species, finding species-specific contamination patterns with anchovies and sardines showing the highest microplastic burdens.
Mikroplastik Dalam Saluran Perncernaan Ikan Di Waduk Jatigede
Researchers analyzed the presence of microplastics in the digestive tracts of fish caught in Jatigede Reservoir, which receives water and contaminants including microplastics from the Cimanuk River. Fish samples from fishermen, collectors, and fish farmers were dissected and their stomach and intestinal contents were examined using FTIR spectroscopy to identify and characterize ingested microplastics.
Assessment of Microplastics in Fish GI Tracts and Shallow Water Sediments in Pugad Baboy Mangrove Area, Kawit, Cavite Using Fourier Transform Infrared-Attenuated Total Reflectance Spectroscopy
Researchers assessed, characterized, and quantified microplastic contamination in fish gastrointestinal tracts and shallow water sediments from the Pugad Baboy Mangrove area in Kawit, Cavite using FTIR-ATR spectroscopy to identify polymer types.
Methods to characterize microplastics: case study on freshwater fishes from a tropical lagoon in Colombia
Fish from Colombia's Luruaco Lagoon contained microplastics with prevalence, abundance, and polymer characteristics analyzed across four sampling events, with principal component analysis linking MP types to feeding ecology and habitat use of the different species.
Identification and Quantification of Microplastics in Mackerel (Rastrelliger sp) at the Tual City Fish Market
Researchers identified and quantified microplastics in the digestive tracts of mackerel from the Tual City fish market in Indonesia using microscopy and FTIR analysis, confirming the presence of multiple polymer types in commercially sold fish.
A comparison of microplastic contamination in freshwater fish from natural and farmed sources
Researchers compared microplastic contamination in farmed Nile tilapia and two wild-caught native freshwater fish species from Colombia, analysing stomach, gill, and flesh tissues using micro-FTIR spectroscopy. Fragments were the dominant microplastic type across all species and tissues, and contamination was found in farmed as well as wild fish, indicating that both aquaculture and natural water environments contribute to microplastic exposure in freshwater fish.
Microplastics Contamination of Mackerel and Red Snapper as Commercial Fish from the Takalar Fish Landing, Indonesia
Researchers identified and characterized microplastics from mackerel and red snapper tissues collected at the Takalar Fish Landing, Indonesia, using FTIR spectroscopy to confirm polymer types after counting particles by shape, size, and color, while implementing contamination-prevention protocols to ensure result accuracy.
Microplásticos En Tres Playas Del Corredor Turístico Del Norte, Piura, Perú
Researchers sampled sediments from three beach zones along northern Peru's tourist corridor in February 2024 and characterized microplastic abundance, morphology, and polymer types using FTIR analysis. Microplastics were detected across all sampling zones, with fragments and fibers dominating and polyethylene as the most common polymer type.
Methods to characterize Microplastics: Case study on freshwater fishes from a tropical lagoon in Colombia
Researchers examined microplastic prevalence, abundance, and physical and chemical characteristics in fish from Luruaco lagoon, Colombia, conducting four sampling events using trawl nets and analyzing gastrointestinal tracts of captured individuals to characterize microplastic ingestion across species.
Microplastics pollution in tropical lakes: water, zooplankton, and fish in Central Mexico
Researchers analyzed microplastic presence in water, zooplankton, and fish across two tropical lakes in central Mexico. The study found microplastics in all compartments including rotifers, microcrustaceans, and fish of the genus Chirostoma, providing evidence of microplastic transfer through freshwater food chains in tropical ecosystems.
Microplastics in Commercial Fishes and By-Catch from Selected FAO Major Fishing Areas of the Southern Baltic Sea
Researchers found microplastics in both edible and non-edible organs of five fish species from the southern Baltic Sea, with 1-12 particles per fish dominated by fibers, and polymers including cellophane, polyamide, polyethylene, and polypropylene identified by FTIR spectroscopy.
Ingested Microplastics in 18 Local Fish Species from the Northwestern Mediterranean Sea
Researchers investigated microplastic occurrence and polymer composition in the digestive tracts of 18 coastal fish species from the northwestern Mediterranean Sea, using hydrogen peroxide digestion and FTIR spectrometry with rigorous blank controls, which led to removing 78% of initially suspected particles. Corrected microplastic concentrations ranged from 0.00 to 5.15 items per fish, consistent with other Mediterranean studies, with polymer type variation across species.
Microplastics and metal burdens in freshwater Tilapia (Oreochromis niloticus) of a metropolitan reservoir in Central Mexico: Potential threats for human health
Tilapia from a metropolitan Mexican reservoir contained an average of 139 plastic fibers in their gastrointestinal tracts, predominantly black, blue, and red polyamide and polyester fibers, alongside elevated metal concentrations — raising concerns about combined dietary exposure via this widely consumed fish.
Screening for microplastics in marine fish of Thailand: the accumulation of microplastics in the gastrointestinal tract of different foraging preferences
Researchers investigated microplastic ingestion in 492 marine fish (361 demersal and 131 pelagic) from Thailand, finding no significant difference in uptake between the two foraging types, with polyamide fibers dominating in both groups. FT-IR analysis confirmed polyamide as the most common polymer and red-colored fibers as the most abundant morphology, providing the first such characterization for Thai marine fish.
Release of Microplastics from Urban Wastewater Treatment Plants to Aquatic Ecosystems in Acapulco, Mexico
Researchers evaluated microplastic presence and removal at three wastewater treatment plants in Acapulco, Mexico, using optical microscopy and FTIR spectroscopy to characterize particles retained on 38-micron and 150-micron filters. The plants removed 82.5-98.7% of microplastics from influent streams, yet still released millions of microplastic particles daily into aquatic ecosystems, with polyethylene, polypropylene, PET, and PVC as the dominant polymer types detected.
Microplastics in the Gastrointestinal Tract and Gills of Fish (Dormitator latifrons) from Monterrico Multiple Use Natural Reserve, Guatemala
Researchers collected fat snook fish (Dormitator latifrons) from a protected estuary in Guatemala and examined their gastrointestinal tracts and gills for microplastics. Microplastics were found in the majority of fish sampled, providing the first data on microplastic ingestion in this protected Central American coastal ecosystem and raising conservation concerns for endemic freshwater fish.
Microplastic Pollution in Tropical River: Fourier Transform Infrared Spectroscopy-Based Characterization of Abundance and Polymer Composition in Water and Sediments from Filobobos River, Mexico
Researchers characterized microplastic pollution in the water and sediments of the Bobos River in the tropical lowlands of Veracruz, Mexico, finding that blue-colored polyethylene fibers were the most common type. The study links the dominant polymer — polyethylene, commonly used in agricultural mulch and chemical containers — to the river basin's agricultural activity. As one of the first microplastic studies in this biodiverse region, it provides baseline data and highlights the need for better plastic waste management in Mexico's river systems.
Identification and Characterization of Microplastics on the Surface Water in Laguna de Bay, Philippines
Researchers collected and characterized 890 microplastic particles from surface water at three sites in Laguna de Bay, the largest lake in the Philippines, using visual microscopy and FTIR analysis. Fibres dominated the samples, photodegradation was evident from colour changes, and polyethylene was the most common polymer type identified.
A comparative study of microplastic detection in Nemipterus japonicus, Rastrelliger kanagurta, Arius sp. and Scylla olivacea from Chennai Coastal Region, India using ATR-FTIR spectroscopy
Researchers compared microplastic detection methods across three commercially important fish species from the same fishing grounds, finding species-specific differences in particle ingestion and demonstrating that gut content analysis methods affect detection outcomes.