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Papers
61,005 resultsShowing papers similar to A non-contact in situ approach for detecting fluorescent microplastic particles in flowing water using fluorescence spectroscopy
ClearA New Optical Method for Quantitative Detection of Microplastics in Water Based on Real-Time Fluorescence Analysis
Researchers developed a new fluorescence-based particle counter for real-time quantitative detection of microplastics in water, validating the method against FTIR analysis on wastewater treatment plant samples containing polyethylene and PVC particles.
In Situ Fluorescent Illumination of Microplastics in Water Utilizing a Combination of Dye/Surfactant and Quenching Techniques
Researchers developed an in situ fluorescent microplastic detection method using a nonpolar dye combined with surfactant to form nanoscale dye particles that selectively adsorb onto and penetrate plastic polymer matrices in water, then quenched free dye fluorescence using aniline to enable direct visualization of stained microplastics without filtration.
Optical measurement technologies for detecting low levels of pollution and identifying microplastics in water
Researchers reviewed optical technologies for detecting and identifying microplastics in water, experimentally characterizing the fluorescence spectra of PE and PET microplastic samples under 365 nm excitation and identifying spectral bands enabling identification of different polymer types, then proposing a comprehensive hardware solution using a fluorescent probe for microplastic visualization.
Frequency domain fluorescence lifetime imaging microscopy: A new method to directly identify microplastics in water.
Researchers evaluated frequency-domain fluorescence lifetime imaging microscopy (FD-FLIM) as a method to identify ABS, PC, PET, PS, and PVC granulates directly in a 1 cm water layer without filtration or drying. The study found that all five polymer types could be unambiguously identified by their fluorescence lifetimes, establishing FD-FLIM as a promising rapid label-free technique for direct microplastic detection in aqueous samples.
Detection and Characterisation of Micro- and Nano-plastics in Water using Optical Spectroscopy
This thesis explored photoluminescence spectroscopy as an alternative technique for detecting and characterizing micro- and nanoplastics in water, optimizing fluorescence excitation-emission features and comparing performance against conventional spectroscopic approaches.
Quantitative Detection of Microplastics in Water through Fluorescence Signal Analysis
Researchers developed an automatic, portable fluorescence-based system for quantitative detection of microplastics in water, using dye-stained particles flowing through a laser beam to enable fast and objective counting without manual microscopy.
Flow Raman Spectroscopy for the Detection and Identification of Small Microplastics
Researchers developed a new method using flow Raman spectroscopy to detect and identify individual microplastic particles as small as 4 micrometers while they move through water. Unlike current methods that require complex sample preparation, this technique could work in real time for monitoring food and drinking water quality. The method can distinguish between different plastic types even after they have been weathered by the environment.
Fast and portable fluorescence lifetime analysis for early warning detection of micro- and nanoplastics in water
Researchers developed a portable fluorescence-based system that can detect micro- and nanoplastics in water without any sample preparation or labeling. The method works by measuring the natural fluorescence lifetime of plastic particles using a pulsed laser, achieving detection limits as low as 0.01 mg/mL. The study presents a promising early-warning tool for rapid, on-site monitoring of plastic contamination in water sources.
Material identification and imaging of microplastics when dispersed in water using near-infrared light toward combination with a flow cell
Researchers developed a near-infrared (NIR) spectroscopy method for identifying and imaging microplastics in water without requiring drying, testing it on polyethylene, polypropylene, polystyrene, and polymethyl methacrylate particles. The method was designed to integrate with a flow cell for continuous measurement, enabling real-time microplastic identification in water samples.
Real-Time Quantification of Microplastics in Aquatic Systems via Fluorescence Microscopy
Researchers developed a real-time fluorescence microscopy method capable of quantifying microplastics in aquatic systems with high precision, providing a faster and more accessible tool for monitoring microplastic contamination in drinking water reservoirs.
Rapid and reliable detection of microplastics in drinking water using fluorescence microscopy
Researchers developed a fluorescence-based method for rapid detection and quantification of microplastics in drinking water, addressing the need for faster and more practical monitoring tools. The method achieved high sensitivity and allowed polymer discrimination without requiring expensive spectroscopic instrumentation.
Optical System for In-situ Detection of Microplastics
Researchers developed a portable optical system capable of detecting, identifying, continuously monitoring, and quantifying microplastics in situ at natural water bodies. The system uses optical techniques to observe the temporal behavior of microplastic concentrations at fixed locations, enabling real-time environmental monitoring without sample collection and laboratory processing.
Fluorescence microfluidic system for real-time monitoring of PS and PVC sub-micron microplastics under flowing conditions
Researchers developed a fluorescence microfluidic system for real-time monitoring of polystyrene and PVC sub-micron particles in water, demonstrating rapid detection capability suitable for continuous plastic pollution monitoring in water supplies.
Outlook on optical identification of micro- and nanoplastics in aquatic environments
Researchers studied the optical properties of micro- and nanoplastics and evaluated near-infrared spectroscopy as a detection method for plastic particles in water, finding that optical techniques show promise for rapid, non-destructive identification. Improved optical detection methods could enable faster and more cost-effective monitoring of plastic pollution in aquatic environments.
Preliminary Results From Detection of Microplastics in Liquid Samples Using Flow Cytometry
Researchers developed a novel flow cytometry approach for in-situ detection and quantification of microplastics in liquid samples using fluorescent staining, testing nine polymer types under controlled laboratory conditions. The method offers a high-throughput alternative to traditional time-consuming microplastic detection protocols that risk sample contamination.
Detection of floating objects in liquids
Researchers reviewed non-invasive optical and imaging technologies for detecting and characterizing floating particles including microplastics in liquids, motivated by growing concern over microplastic contamination in drinking water and food products. They found that advances in computational imaging and spectroscopic methods offer promising pathways for scalable, real-time monitoring of large water volumes.
Detection and identification of microplastics directly in water by hyperspectral imaging
Researchers used hyperspectral imaging to identify different types of microplastics mixed together in water, demonstrating that the technique can distinguish polymer types based on their spectral signatures. This non-destructive, real-time method could improve the speed and accuracy of microplastic monitoring in water samples.
Tracking Microplastics Across the Streambed Interface: Using Laser‐Induced‐Fluorescence to Quantitatively Analyze Microplastic Transport in an Experimental Flume
Researchers used laser-induced fluorescence in a laboratory flume to quantitatively track microplastic transport across the streambed interface, demonstrating that pore-scale microplastics accumulate preferentially in hyporheic zones under certain flow conditions.
A Selective Ratiometric Fluorescent Probe for No-Wash Detection of PVC Microplastic
Researchers developed a selective ratiometric fluorescent probe for detecting PVC microplastics without sample washing, offering a simpler and faster method than current spectroscopic approaches for identifying this specific polymer type in water.
Revolutionizing microplastic detection in water through quantum dot fluorescence
Researchers developed a quantum dot fluorescence-based detection system for microplastics in water, achieving sensitive and rapid identification of multiple polymer types with lower detection limits and faster analysis times than conventional spectroscopic methods.
In-situ Detection Method for Microplastics in Water by Polarized Light Scattering
Researchers developed an in-situ detection method for microplastics in water using polarized light scattering at 120 degrees, enabling real-time measurement of individual particles without sample collection or laboratory processing.
Compact holographic microscope for imaging flowing microplastics
Researchers developed a compact holographic microscope capable of imaging flowing microplastics in aquatic environments, providing a fast, quantitative method for real-time characterization of plastic particle size and shape distributions.
Feasibility study for simple on-line Raman spectroscopic detection of microplastic particles in water using perfluorocarbon as a particle-capturing medium
Researchers developed a simplified Raman spectroscopy setup using an oil-based medium to capture and identify microplastic particles directly from water. The approach offers a cost-effective, on-line method for detecting microplastic contamination without the need for complex filtration equipment.
Can flow cytometry emerge as a high-throughput technique for micro- and nanoplastics analysis in complex environmental aqueous matrices?
Researchers reviewed the potential of flow cytometry — a technique that rapidly analyzes individual particles — as a high-throughput tool for detecting micro- and nanoplastics in water samples, finding it excels at measuring particles smaller than 20 micrometers that other methods struggle to detect. Using fluorescent dyes to tag plastics, the approach could enable near-real-time environmental monitoring at a scale no other current technique can match.