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61,005 resultsShowing papers similar to Visualization and Detection of Polystyrene Micro(nano)plastics in PM2.5 by Atomic Force Microscopy–Raman Spectroscopic Imaging
ClearVisualizationand Detection of Polystyrene Micro(nano)plasticsin PM2.5 by Atomic Force Microscopy–Raman SpectroscopicImaging
Researchers applied atomic force microscopy–Raman spectroscopic imaging to simultaneously detect and characterize polystyrene micro- and nanoplastics in PM2.5 atmospheric particulate matter, demonstrating morphological and chemical identification of particles below the resolution limit of conventional optical methods.
Detection of Microplastics in Ambient Particulate Matter Using Raman Spectral Imaging and Chemometric Analysis
Researchers optimized Raman spectral imaging combined with chemometric analysis to detect and identify microplastics in ambient airborne particulate matter at sizes down to 2 micrometers. The study demonstrates a method for spectroscopically verifying the chemical composition of airborne microplastics, addressing concerns about human inhalation exposure to small plastic particles that can reach the lungs.
Overcoming resolution limitations: Spectroscopy of sub-30 nm nanoplastics
Researchers developed a multi-technique approach combining standard micro-Raman spectroscopy with atomic force microscopy to characterize nanoplastics as small as 25 nm, achieving a mass detection limit of 8.6 attograms and demonstrating the capability to obtain single-particle spectra from sub-30 nm polystyrene nanoparticles.
Overcoming resolution limitations: Spectroscopy of sub-30 nm nanoplastics
Researchers developed a multi-technique approach combining standard micro-Raman spectroscopy with atomic force microscopy to characterize nanoplastics as small as 25 nm, achieving a mass detection limit of 8.6 attograms and demonstrating the capability to obtain single-particle spectra from sub-30 nm polystyrene nanoparticles.
Novel Single-Particle Analytical Technique for Inhalable Airborne Microplastic Particles by the Combined Use of Fluorescence Microscopy, Raman Microspectrometry, and SEM/EDX
Researchers developed a novel single-particle analytical method combining fluorescence microscopy, Raman microspectrometry, and SEM/EDX to characterize inhalable airborne microplastics smaller than 10 µm in ambient PM10 aerosols, addressing a critical gap in understanding respiratory exposure to plastic particles.
Novel Single-Particle Analytical Technique for Inhalable Airborne Microplastic Particles by the Combined Use of Fluorescence Microscopy, Raman Microspectrometry, and SEM/EDX
Researchers developed a new method combining fluorescence microscopy, Raman spectroscopy, and electron microscopy to analyze individual airborne microplastic particles small enough to inhale. The technique can identify both the polymer type and chemical composition of particles under 10 micrometers found in urban air samples. Better tools for characterizing breathable microplastics are essential for understanding respiratory exposure risks.
Direct Nanoplastics Detection Below the Diffraction Limit Using Micro Raman
Researchers demonstrated that micro-Raman spectroscopy can directly detect polystyrene nanoplastic particles as small as 20 nm — far below the normal diffraction limit. This advances analytical capabilities for detecting the smallest nanoplastic particles in environmental samples.
Raman Spectral Imaging for the Detection of Inhalable Microplastics in Ambient Particulate Matter Samples
Researchers developed a filter-based sampling method compatible with Raman spectral imaging to detect inhalable-sized microplastics in ambient air samples. They successfully identified and mapped plastic particles as small as a few micrometers on sampling filters. The study provides a practical new analytical approach for measuring airborne microplastic exposure, an area where reliable detection methods have been lacking.
Single-particle investigation of airborne microplastics of inhalable size (<10 μm) using fluorescence microscopy, Raman microspectrometry, and scanning electron microscopy/energy dispersive X-ray spectrometry in combination
Researchers developed a new analytical strategy combining fluorescence microscopy, Raman microspectrometry, and scanning electron microscopy to reliably detect and characterize inhalable airborne microplastics smaller than 10 µm, finding approximately 800 microplastic particles per cubic meter in ambient urban air.
In situ chemical characterization of airborne nanoplastic particles by aerosol mass spectrometry
Researchers used aerosol mass spectrometry to chemically characterize airborne nanoplastic particles in real time in urban air. They detected multiple polymer types including polyethylene and polystyrene at concentrations that varied with location and weather conditions. This approach enables in situ monitoring of atmospheric nanoplastics without sample collection, advancing understanding of human inhalation exposure.
Localisation and identification of polystyrene particles in tissue sections using Raman spectroscopic imaging
Researchers developed a Raman spectroscopic imaging method to localize and identify polystyrene microplastic particles directly within tissue sections, enabling in-situ detection without fluorescent labeling and making environmental sample analysis feasible.
Raman Microscopy and Pyrolysis GC/MS for Comprehensive Analysis of PM10 Microplastics: Method Development and Urban-Rural Comparison
Researchers developed and validated a combined Raman microscopy and pyrolysis GC/MS method for comprehensive analysis of microplastics in PM10 airborne particulate matter, comparing urban and rural samples. Both methods detected microplastics in PM10 from all sites, with higher concentrations in urban air, and the combination provided complementary information on polymer composition and particle morphology.
A novel application of thermogravimetry-mass spectrometry for polystyrene quantification in the PM10 and PM2.5 fractions of airborne microplastics
Researchers developed a thermogravimetry-mass spectrometry method to quantify airborne polystyrene microplastics and found that most airborne polystyrene exists in the lung-penetrating PM2.5 fraction, with agricultural practices identified as a likely source.
A Study on the Distribution Characteristics of Microplastics in the Atmosphere Using Spectroscopic Analysis
Using micro-Raman spectroscopy, researchers identified and characterized microplastics in atmospheric fine dust samples collected with a high-volume air sampler. The study confirms that microplastics are present in fine airborne particulates, contributing to evidence that humans are exposed to plastic particles through inhalation.
Rapid Single Particle Atmospheric Solids Analysis Probe-Mass Spectrometry for Multimodal Analysis of Microplastics
Researchers developed an atmospheric solid analysis probe coupled to mass spectrometry for rapid chemical characterization of single microplastic particles, enabling polymer identification while remaining compatible with complementary imaging techniques for comprehensive microplastic analysis.
A Novel Strategy to Directly Quantify Polyethylene Microplastics in PM2.5 Based on Pyrolysis-Gas Chromatography–Tandem Mass Spectrometry
Researchers developed a new method using pyrolysis gas chromatography-tandem mass spectrometry to directly measure polyethylene microplastics in fine airborne particulate matter (PM2.5). This technique overcomes limitations of visual and spectroscopic methods that struggle to detect very small plastic particles in air samples. The study provides one of the first tools for accurately quantifying microplastics in PM2.5, helping researchers better understand the extent of airborne plastic pollution.
Analytical Challenges and Strategies for Particle-Based Analysis of Airborne Micro(nano)plastics in Size-Fractionated Samples Using Microscopy, SEM/EDX, and Raman Spectroscopy
This review covered analytical strategies for characterizing airborne microplastics as particles, addressing sampling challenges, detection methods including spectroscopy, and the importance of particle-level analysis for accurate exposure assessment. It identified key methodological gaps and recommended standardization approaches.
Identification of Microplastics Using a Custom Built Micro-Raman Spectrometer
Researchers built a custom micro-Raman spectrometer and demonstrated its use for identifying microplastic polymer types in environmental samples, achieving sensitive and specific polymer identification at particle sizes down to a few micrometers.
Size-Resolved Identification and Quantification of Micro/Nanoplastics in Indoor Air Using Pyrolysis Gas Chromatography–Ion Mobility Mass Spectrometry
Scientists developed a new method to measure micro and nanoplastics in indoor air down to 56 nanometers in size, using advanced mass spectrometry techniques. They found significant concentrations of plastic particles in both a laboratory and a private home, with polystyrene being the most common type, and also detected flame retardant chemicals associated with plastic furniture foam. This study provides some of the first evidence that people are breathing in substantial amounts of nanoscale plastic particles indoors, where most people spend the majority of their time.
Analysis of micro- and nanoplastics in air samples using tuneable resistive pulse sensing and raman spectroscopy
Researchers applied tunable resistive pulse sensing to characterize micro- and nanoplastics in air samples, evaluating the technique's sensitivity for detecting particles in the sub-micron range. The method provided size and concentration data for airborne nanoplastics that are not detectable by conventional spectroscopic techniques.
Hyperspectral TERS Imaging Reveals Strain Heterogeneity in Individual Nanoplastic Particles
Researchers used AFM-based tip-enhanced Raman spectroscopy (AFM-TERS) to chemically image individual polystyrene nanoplastic particles at nanometer resolution under ambient conditions. The technique revealed internal strain heterogeneity and chemical variability within single nanoplastic particles, demonstrating a powerful new tool for nanoplastic characterization.
Sub-10 nm Nanoparticle Detection Using Multi-Technique-Based Micro-Raman Spectroscopy
Researchers combined standard micro-Raman spectroscopy with atomic force microscopy to detect individual nanoparticles as small as 9 nm — a size range that until now required far more complex and time-consuming instruments. This advance matters for microplastic research because plastics continuously fragment into nanoplastics, and having accessible tools to characterise these ultra-small particles is essential for understanding their environmental distribution and biological uptake.
Development of automated microplastic identification workflow for Raman micro-imaging and evaluation of the uncertainties during micro-imaging
Researchers developed an automated identification workflow for Raman micro-imaging of microplastics, validating it with artificial samples of known polymer microspheres and showing that the workflow reliably identifies plastic type and estimates particle size across a range of sizes.
Identification of polystyrene nanoplastics using surface enhanced Raman spectroscopy
Researchers demonstrated for the first time that surface-enhanced Raman spectroscopy (SERS) using silver nanoparticles can identify polystyrene nanoplastics as small as 50 nm in real water samples, providing a rapid detection method that bypasses conventional sample preparation and could advance environmental monitoring of nanoplastics previously invisible to standard analytical techniques.