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20 resultsShowing papers similar to Automated μFTIR Imaging Demonstrates Variability in Microplastic Ingestion by Aquatic Insects in a Remote Taiwanese Mountain Stream
ClearAutomated μFTIR Imaging Demonstrates Taxon-Specific and Selective Uptake of Microplastic by Freshwater Invertebrates
Researchers used automated micro-FTIR imaging to quantify microplastic ingestion by multiple freshwater invertebrate taxa from field-collected sediments, finding taxon-specific differences in ingestion rates and selectivity for particle type and size, suggesting that feeding behavior mediates microplastic exposure.
Quantifying and classifying microplastics and microparticles across aquatic heterotrophs from headwater streams in central Pennsylvania
Researchers found microparticle contamination across multiple trophic levels in remote forested headwater streams in central Pennsylvania, with secondary consumers showing the highest contamination rates and µFTIR confirming true microplastics at two of five sampling sites.
Investigating the presence of nanoplastics in freshwater chironomids from glacial habitats using Raman spectroscopy
Researchers used Raman spectroscopy to detect nanoplastics in larvae of two chironomid species from glacier-fed high-altitude streams in northern Italy after enzymatic and oxidative digestion. Nanoplastics were confirmed in multiple samples, demonstrating that plastic contamination reaches even remote alpine aquatic habitats with minimal direct human presence.
FTIR based assessment of microplastic contamination in soil water and insect ecosystems reveals environmental and ecological risks
Researchers in southern India used infrared spectroscopy to measure microplastic contamination in soil, water, and insects, finding polypropylene and polystyrene in over 91% of samples. The study revealed that insects like beetles and bees can carry microplastics on their bodies and spread them through ecosystems, highlighting another pathway by which plastic pollution can move through the food chain toward humans.
Validation of an imaging FTIR spectroscopic method for analyzing microplastics ingestion by Finnish lake fish (Perca fluviatilis and Coregonus albula)
Researchers developed and validated an imaging FTIR spectroscopy method for identifying microplastics ingested by Finnish lake fish, including perch and vendace. The study confirmed that wild freshwater fish are ingesting microplastics and demonstrated that standardized analytical methods are needed to improve the reliability of microplastic detection in aquatic organisms.
Spatial variability of atmospheric deposition of microplastic in moutain environments
Researchers investigated the spatial variability of atmospheric microplastic deposition in mountain environments across the Northern and Southern Hemispheres — including the Pyrenees, Reunion Island, Hawaii, and Fiji — using bioindicators such as brown trout, biofilm, Sphagnum moss, and Usnea lichen alongside advanced µ-FT-IR and Raman spectroscopy. Results from the Pyrenees showed that freshwater bioindicators and Sphagnum reflected elevated microplastic pollution linked to local tourism, with size fractions below 50 µm characterised for the first time in these remote environments.
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.
Development of a rapid detection protocol for microplastics using reflectance-FTIR spectroscopic imaging and multivariate classification
Reflectance-FTIR spectroscopy was evaluated as a faster and more automated detection method for microplastics in environmental samples, with results showing strong potential for high-throughput screening. The method could reduce the time and cost of routine microplastic monitoring programs.
Identification 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.
Identificação de polímeros de microplásticos encontrados no trato digestivo de peixes do Lago de Amatitlán, Guatemala
Using FTIR-ATR spectroscopy, 68 microplastics from the gastrointestinal tracts of 36 fish from Lake Amatitlán, Guatemala were identified and characterized, representing 10% of the total extracted particles. The Portuguese-language study determined the predominant polymer types and likely contamination origins in fish from this Central American lake ecosystem.
First insights into plastic and microplastic occurrence in biotic and abiotic compartments, and snow from a high-mountain lake (Carnic Alps)
This study provided first data on plastic and microplastic occurrence in both biotic and abiotic samples from high-mountain lakes on the Tibetan Plateau, one of the most remote freshwater ecosystems on Earth. Plastics larger than 5 mm and microplastics were found in lake water and biota, demonstrating that even pristine high-altitude freshwater systems are not free from plastic contamination.
Focal plane array detector-based micro-Fourier-transform infrared imaging for the analysis of microplastics in environmental samples
Researchers developed an automated protocol using focal plane array FT-IR imaging to identify and count microplastics on filters without manual sorting, dramatically increasing throughput compared to manual methods. The approach represents an important step toward standardized, high-throughput microplastic monitoring in aquatic environments.
Presence of Microplastics in Ephemeroptera, Plecoptera, and Trichoptera of North Cascades National Park
Researchers found microplastics in mayflies, stoneflies, and caddisflies sampled from streams in North Cascades National Park, Washington State. The results suggest that glacial meltwater may be transporting microplastics into pristine protected wilderness streams, with these insects potentially serving as vectors that move plastic particles up the food web to birds and fish.
Microplastic pollution in Kolavai Lake, Tamil Nadu, India: Quantification of plankton-sized microplastics in the surface water of lake
Researchers surveyed Kolavai Lake in Tamil Nadu, India, and found microplastics at an average of 6.1 particles per liter across the lake's surface water, with higher concentrations near urban and southern zones. The study used FTIR spectroscopy to confirm the chemical identity of particles and examined how microplastic abundance compares to zooplankton density, finding that microplastics were present at levels that could disrupt plankton feeding. These results highlight how even inland freshwater lakes in India are heavily contaminated, with implications for aquatic food chains and the communities that depend on this water.
Validation of an FT-IR microscopy method for the determination of microplastic particles in surface waters
Researchers validated an FT-IR microscopy method for reliably detecting and quantifying microplastic particles in aquatic and solid samples. Validated, standardized analytical methods are essential for producing comparable data across laboratories and building a reliable global picture of microplastic contamination.
An automated approach for microplastics analysis using focal plane array (FPA) FTIR microscopy and image analysis
Researchers developed an automated approach using focal plane array FT-IR spectroscopy for microplastic analysis, enabling faster and more comprehensive identification of particles in environmental samples with less manual effort.
Microplastics in biotic and abiotic compartments of high-mountain lakes from Alps
Researchers surveyed microplastic pollution in two remote high-altitude lakes in the Italian Alps, finding plastic particles in lake sediments, tadpoles, and fish (but not in open water or zooplankton), with younger fish accumulating more microplastics than older ones — suggesting fish as useful pollution indicators even in pristine mountain environments.
Microplastic in the surface waters of the Ross Sea (Antarctica): Occurrence, distribution and characterization by FTIR
Researchers conducted the first survey of microplastic contamination in Antarctic Ross Sea surface waters, finding low concentrations averaging 0.17 particles per cubic meter and dominated by polyethylene and polypropylene fragments, using a non-invasive FTIR imaging method on dried filters that allows subsequent analysis of the same sample for other contaminants.
Microplastic Pollution in Urban Natural Lakes of Kathmandu Valley, Nepal
Researchers studied microplastic pollution in the surface waters of two urban natural lakes in Nepal's Kathmandu Valley. Using stereomicroscopy and FTIR spectroscopy, they characterized the abundance, types, and polymer composition of microplastics, finding notable contamination levels that highlight the need for monitoring microplastic pollution in urban freshwater systems in developing regions.
Rapid analytical method for characterization and quantification of microplastics in tap water using a Fourier-transform infrared microscope
Researchers developed a faster FTIR microscope method for analyzing microplastics across the whole filtration area and applied it to 42 tap water samples from five countries, finding mean concentrations of 39 particles per liter with polyester fibers and PVC fragments among the most common types.