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Papers
61,005 resultsShowing papers similar to Field-Assisted Efficient Capturing and Analysis of Airborne Nanoparticulate Matter Using a Multifunctional Nanoporous Membrane
ClearRaman 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.
Metal-free AAO membranes function as both filters and Raman enhancers for the analysis of nanoplastics
Scientists developed a simple, metal-free aluminum oxide membrane that works as both a filter and a signal-enhancing surface for detecting nanoplastics using Raman spectroscopy. The approach successfully identified plastic particles as small as 200 nanometers across six common polymer types, without complex sample preparation. This dual-function tool could offer a cost-effective and practical way to analyze nanoplastic contamination in environmental samples.
Efficient V-Shaped Substrate for Surface and Volume Enhanced Raman Spectroscopic Analysis of Bioaerosol: Prevention from Potential Health Risk
Scientists developed a rapid and affordable sensor using a specially designed nanopore surface to detect airborne bacteria in just 10 minutes. While focused on bioaerosol detection rather than microplastics specifically, the sensor technology could potentially be adapted to identify microplastic-associated bacteria in the air. Better detection tools for airborne contaminants help researchers understand the full range of health risks people face from breathing polluted air.
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.
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.
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.
Development and evaluation of an air filtration system combining Electrostatic Precipitators for airborne microplastics
Researchers designed and evaluated an electrostatic precipitator-based air filtration system specifically targeting airborne microplastics. The system demonstrated effective capture of microplastic particles from indoor air, offering a practical engineering solution to reduce human inhalation exposure.
Microfluidics-based electrophoretic capture and Raman analysis of micro/nanoplastics
Researchers developed a microfluidics-based electrophoretic capture system combined with Raman spectroscopy analysis to detect and characterize micro- and nanoplastics from aquatic ecosystems, exploiting differences in polymer composition to improve identification accuracy.
Performance of Electrified MXene Membranes in Real Wastewater Applications
Researchers investigated the performance of electrified MXene-based membranes for nanoplastic removal from real wastewater, finding that applying an electric field significantly improved nanoplastic rejection through electrostatic repulsion and electrocoagulation mechanisms while also increasing water flux compared to non-electrified conditions.
Unveiling Microplastic Pollution in the Air: Optimizing filter material and Work-up in PM10 studies
Researchers optimized filter material selection and sample preparation protocols for PM10 aerosol studies targeting airborne microplastics, finding that filter type significantly affects microplastic recovery and that careful blanking and contamination controls are essential.
Tracking nanoplastics in drinking water: a new frontier with the combination of dielectrophoresis and Raman spectroscopy
Researchers developed a new combined technique using dielectrophoresis and Raman spectroscopy to detect and identify nanoplastics in drinking water. The method can trap and concentrate nanoplastic particles that are too small for conventional detection approaches, then chemically identify them. This advancement addresses a critical gap in our ability to monitor nanoscale plastic contamination in water supplies.
Analysis of micro- and nanoplastics in air samples using tuneable resistive pulse sensing and raman spectroscopy
Researchers used tunable resistive pulse sensing to analyze micro- and nanoplastics in air samples, testing the technique's ability to size and count particles in the nanometer range. The method showed promise for detecting nanoplastics in air, a scale that is particularly difficult to characterize with traditional techniques.
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.
Microplastics and nanoplastics science: collecting and characterizing airborne microplastics in fine particulate matter
Researchers developed and evaluated methods for collecting and characterizing airborne microplastics smaller than 2.5 micrometers for toxicological assessment. They found that a variety of microplastics in the respirable size range of 0.1 to 1 micrometer were present in personal, indoor, and outdoor air samples. The study highlights challenges in identifying airborne microplastics after cellular exposure and emphasizes the need for optimized analytical methods to better understand inhalation risks.
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.
Determination of Nanoplastics Using a Novel Contactless Conductivity Detector with Controllable Geometric Parameters
Researchers developed a novel contactless conductivity detection method for capillary electrophoresis that enables sensitive quantification of nanoplastic particles in environmental samples, offering a simpler alternative to existing nanoplastic detection techniques.
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.
Nanoporous membrane filter cascade for size‐selective analysis of nano‐ and microplastic particles
Researchers developed a nanoporous membrane filter cascade system capable of size-selective analysis of plastic particles spanning from microplastic dimensions down to 10 nm nanoparticle dimensions, addressing the challenge of analyzing nano- and microplastics across several orders of magnitude in particle size for drinking water and food chain health impact studies.
Preconcentration of nanoplastics using micro-electromembrane extraction across free liquid membranes
Researchers developed a miniaturized electrical extraction technique that concentrates nanoplastics from liquid samples across a thin oil membrane using an electric field, then analyzes them using capillary electrophoresis. The method achieved over 20-fold concentration of nanoplastics in just 5 minutes and successfully removed interfering compounds from tea samples, offering a fast and sensitive tool for detecting nanoplastics in complex real-world liquids.
Fabrication of dual-charged MOF-based ultrafiltration membrane to remove charged nanoplastics from wastewater
Researchers developed a new type of water filter membrane that can remove over 99% of nanoplastics from wastewater while maintaining high water flow. The membrane uses metal-organic framework nanoparticles that repel plastic particles through electrical charges and physical filtering. This technology could help prevent nanoplastics, which are too small for conventional filters, from reaching drinking water sources.
The quantification of the airborne plastic particles of 0.43–11 μm: Procedure development and application to atmospheric environment
Researchers developed a new method for measuring airborne plastic particles as small as 0.43 micrometers, a size range rarely studied before. Testing the approach in real atmospheric conditions, they detected multiple types of plastic polymers in the air, including polyethylene, polystyrene, and PET, providing evidence that people are regularly breathing in ultrafine plastic particles.
Development and evaluation of an air filtration system combining Electrostatic Precipitators for airborne microplastics
This study developed and tested an air filtration system combining electrostatic precipitators to capture airborne microplastics in indoor environments. Testing confirmed the system could efficiently remove microplastic particles, presenting a promising tool for reducing indoor inhalation exposure.
A scalable, extensive and non-destructive trapping method based on dielectric forces to collect nanoparticles and nano-biosensing tools
Researchers developed a nanoscale trapping device that uses electrical forces to precisely capture and sort tiny particles, including nanoplastics, for detection and analysis. The technology works at low voltages and could be integrated into portable biosensors for rapid environmental monitoring. While primarily a technology advance, this kind of tool could improve our ability to detect and measure the nanoplastic particles that are most likely to enter the human body.
A Flow-through Passive Sampler for Microplastics in Air
Researchers developed and tested a flow-through passive air sampler designed to capture airborne microplastics without requiring electrical power. Field tests showed the sampler produced results comparable to conventional high-volume air samplers while being deployable in remote locations. The device offers a practical, low-cost tool for monitoring microplastic concentrations in the atmosphere across diverse settings.