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61,005 resultsShowing papers similar to Small microplastics (<100 μm), plasticizers and additives in seawater and sediments: Oleo-extraction, purification, quantification, and polymer characterization using Micro-FTIR
ClearAdditives, 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.
Quantification and characterization of additives, plasticizers, and small microplastics (5–100 μm) in highway stormwater runoff
Small microplastics (5-100 micrometers), plastic additives, and plasticizers were quantified in highway stormwater runoff samples using micro-FTIR and optimized extraction protocols. Small microplastics dominated by number, with rubber fragments and tire-wear particles prominent, and concentrations varied significantly between rainfall events based on road traffic intensity and antecedent dry period.
Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy
Researchers developed a standardized methodology for detecting and characterizing small microplastics (10-500 micrometers) in different water types using micro-FTIR spectroscopy. The study tested various sample preparation approaches for seawater, freshwater, and wastewater, establishing reliable protocols for rinsing, digestion, and microplastic collection that can be used to assess treatment plant removal efficiency.
Analysis of Microplastics and Small Microplastics (<100 ??????m) in Natural Waters via Micro-FTIR
This book chapter discussed using micro-FTIR spectroscopy to detect and quantify microplastics smaller than 100 µm in natural (marine and freshwater) water samples. The authors emphasized the importance of this size class for ecological risk and described practical considerations for accurate quantification.
Microplastics monitoring in different environments: separation, physicochemical characterization, and quantification
Researchers systematically monitored microplastic contamination across multiple environments including a wastewater treatment plant, surrounding water bodies, and soils near plastic factories, characterizing shape, size, color, and polymer composition via microscopy and FTIR spectroscopy. They found fragments and fibers to be the most common microplastic shapes in water environments and documented simultaneous contamination across all sampled matrices.
Contributions of Fourier transform infrared spectroscopy in microplastic pollution research: A review
This review covers advances in Fourier transform infrared (FTIR) spectroscopy techniques — including chemical imaging — for identifying polymer types in microplastic samples and tracing their fate in different environmental matrices.
Analysis of Microplastic at Sea Water and Sediment in the Pasaran Island Bay Using FT-IR
Researchers analysed microplastic particle counts, morphologies, and polymer types in seawater and sediment samples collected from four stations around Pasaran Island Bay using FT-IR spectroscopy. Extraction protocols used 70% ethanol, hydrogen peroxide, and sodium chloride for seawater samples and FeSO4, NaCl, and H2O2 for sediments, characterising the nature and extent of microplastic pollution at this Indonesian marine site.
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.
The applicability of reflectance micro-Fourier-transform infrared spectroscopy for the detection of synthetic microplastics in marine sediments
Researchers developed and validated an optimized micro-FT-IR spectroscopy protocol for detecting microplastics in coastal marine sediments, providing a detailed operating procedure. The standardized method improves detection reliability and enables comparison of results across laboratories studying sediment microplastic contamination.
An Integrated Assessment of Microplastic Pollution in Coastal Surface Water and Sediment of Japan
Researchers conducted a comprehensive survey of microplastic pollution in surface water and sediment at 15 coastal locations across Japan, from Hokkaido to Okinawa. They extracted over 53,000 suspected microplastic particles and identified the most common polymers using FTIR spectroscopy. The study provides an integrated baseline dataset for understanding the extent and distribution of microplastic contamination along Japanese coastlines.
Microplastic Pollution in Libyan Port Sediments: Today's Findings and Environmental Impacts
Researchers used FTIR spectroscopy to identify and characterize microplastics in sediment samples collected from three port locations in west Libya near the Mediterranean Sea, providing baseline data on microplastic pollution types and environmental impacts in Libyan coastal environments.
From the highway to receiving water bodies: identification and simultaneous quantification of small microplastics (< 100 µm) in highway stormwater runoff
Researchers used micro-FTIR vibrational spectroscopy to simultaneously identify and quantify small microplastics (under 100 µm) in highway stormwater runoff sampled at inlet and outlet points of a filtration facility in Italy. Inlet concentrations reached up to 39,813 SMPs/L with polyamide 6 and HDPE dominating, and the treatment system reduced concentrations substantially, though significant microplastic loads still discharged to the receiving water body.
Microplastic fouling: A gap in knowledge and a research imperative to improve their study by infrared characterization spectroscopy
Researchers analysed 4,042 infrared spectra of polystyrene, polyethylene, and polypropylene microplastics collected from the Mediterranean Sea using principal component analysis, identifying that spectral variability in weathered marine microplastics is primarily driven by three processes: chemical ageing, organic fouling, and inorganic fouling.
A novel method for purification, quantitative analysis and characterization of microplastic fibers using Micro-FTIR
Researchers developed an improved method for purifying, quantifying, and characterizing microplastic fibers using micro-FTIR spectroscopy, addressing the challenge that fibers are harder to process and identify than other microplastic shapes. The method improvements enable more accurate characterization of this common but technically challenging category of environmental microplastics.
Quantification and characterization of microplastics in surface water samples from the Northeast Atlantic Ocean using laser direct infrared imaging
Researchers quantified microplastics in Northeast Atlantic Ocean surface waters using laser direct infrared imaging, detecting particles down to 20 micrometers and revealing microplastic concentrations and polymer compositions across eight sampling locations.
Plastics, (bio)polymers and their apparent biogeochemical cycle: An infrared spectroscopy study on foraminifera
Using FTIR microscopy, researchers investigated whether marine foraminifera incorporate microplastics and plasticizers from sediments, finding evidence of polymer uptake and plasticizer internalization in both cultured and field-collected specimens from the Mediterranean seafloor.
Seasonal and spatial distribution of microplastics in sediments by FTIR imaging throughout a continuum lake - lagoon- beach from the Tunisian coast
Researchers investigated seasonal and spatial distribution of microplastics in sediments across a lake-lagoon-beach continuum on the Tunisian coast, using FTIR imaging to characterize plastic types, finding microplastics throughout all ecosystems with variations by season, depth, and proximity to pollution sources.
Refined Analysis of Microplastics: Integrating Infrared and Raman Spectroscopy
This study optimized the use of Fourier Transform Infrared Spectroscopy (FTIR) and Raman spectroscopy for characterizing microplastics in aquatic environments, finding that integrating both techniques improves identification accuracy and physicochemical characterization.
Quantification and Chemical Characterization of Plastic Additives and Small Microplastics (<100 μm) in Highway Road Dust
Researchers quantified small microplastics (under 100 micrometers) and plastic additives in highway road dust samples using micro-FTIR analysis. The study found significant concentrations of small microplastics across sampling sites, highlighting road dust as an important but often overlooked source of microplastic contamination that can become airborne or wash into waterways via stormwater runoff.
Stereomicroscopic and Fourier Transform Infrared (FTIR) Spectroscopic Characterization of the Abundance, Distribution and Composition of Microplastics in the Beaches of Qingdao, China
Microplastics were found on two beaches in Qingdao, China at varying concentrations, with fibers as the most common type. The study used FTIR spectroscopy to identify polymer types including polyester and polypropylene, contributing to the global picture of beach microplastic contamination.
Evidence of small microplastics (<100 μm) ingestion by Pacific oysters (Crassostrea gigas): A novel method of extraction, purification, and analysis using Micro-FTIR
Researchers developed a novel extraction, purification, and micro-FTIR analysis method to detect small microplastics under 100 micrometers in Pacific oysters (Crassostrea gigas), confirming ingestion of these smaller particles and finding that existing methods routinely miss this size fraction due to inadequate tissue digestion protocols.
Sources and fate of microplastics in marine and beach sediments of the Southern Baltic Sea—a preliminary study
Researchers investigated microplastic sources and distribution in marine and beach sediments of the southern Baltic Sea — one of the most polluted regional seas — using density extraction and FT-IR identification. The study found widespread contamination with significant variability tied to local sources and hydrodynamic transport patterns.
Microplastiche: classificazione, identificazione e rimozione all'interno degli impianti di trattamento delle acque reflue
This Italian-language paper reviews how microplastics are classified, identified using techniques like FTIR spectroscopy, and removed in wastewater treatment plants. Conventional treatment plants remove a substantial portion of microplastics but still allow many particles to pass through into the environment. The review calls for better treatment technologies and standardized methods to assess microplastic removal efficiency.
Detecting small microplastics down to 1.3 μm using large area ATR-FTIR
Researchers introduced large-area ATR-FTIR spectroscopy as a new technique capable of detecting microplastics as small as 1.3 micrometers, outperforming conventional micro-FTIR for small particle detection in marine water samples.