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Papers
61,005 resultsShowing papers similar to Detection of floating objects in liquids
ClearOutlook 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.
Detection of Microplastics in Water and Ice
Researchers explored optical detection methods for identifying microplastics floating on water surfaces or trapped in ice, taking advantage of the unique light-reflecting properties of different plastic types. Advances in optical detection are important for developing faster, non-destructive tools for monitoring microplastic pollution.
On the Potential for Optical Detection of Microplastics in the Ocean
This study examines the potential for optical methods to detect microplastics in ocean water at large spatial scales, noting that while optical detection is promising for overcoming the limitations of discrete water sampling, methods remain in early development and reference libraries of microplastic optical properties are sparse.
Evaluation of Monitoring Technologies and Methods for Micro Plastics in Water as Novel Pollutants
This review surveys the range of technologies currently available for detecting and monitoring microplastics in water, including spectroscopic, microscopic, and chemical identification methods, outlining the strengths and limitations of each. Consistent and effective monitoring is identified as essential for controlling microplastic pollution, yet no single approach yet meets all needs across diverse water types and concentrations. The paper calls for stronger monitoring frameworks to support both research and regulatory decision-making on microplastic contamination.
Field-Portable Microplastic Sensing in Aqueous Environments: A Perspective on Emerging Techniques
This review examines emerging field-portable technologies for detecting and quantifying microplastics in aqueous environments, discussing optical, spectroscopic, and electrochemical sensing approaches. Researchers identify the lack of a standardized, rapid on-site method as the primary bottleneck limiting accurate real-world microplastic monitoring.
Development of a Near-Infrared Imaging System for Identifying Microplastics in Water
Researchers developed a near-infrared imaging system capable of automatically identifying and characterizing microplastics suspended in water, successfully obtaining material identification images without the manual sorting typically required by conventional methods.
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.
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.
Advancing floating macroplastic detection from space using hyperspectral imagery
Researchers evaluated the use of hyperspectral satellite and airborne imagery to detect floating plastic debris in rivers and oceans, addressing major challenges related to plastic spectral properties in field conditions. Remote sensing tools for plastic detection are important for large-scale monitoring of the macro-scale plastic that eventually becomes microplastics.
Identifying microplastic contamination in drinking water: analysis and evaluation using spectroscopic methods
Researchers developed analytical methods to identify and quantify microplastic contamination in drinking water, evaluating extraction efficiency and detection accuracy across different water types and plastic particle sizes. The study assessed health implications based on measured plastic loads in treated water.
A non-contact in situ approach for detecting fluorescent microplastic particles in flowing water using fluorescence spectroscopy
Researchers developed a non-contact in situ method combining fluorescence spectroscopy and interferometric particle imaging to detect, characterise, and classify fluorescent polypropylene microplastic particles in flowing water.
Holographic and polarization features analysis for microplastics characterization and water monitoring
Researchers explored digital holography and polarization imaging as a combined technique for characterizing and classifying microplastics in water, computing features including angle of polarization (AoP) and degree of linear polarization (DoLP) to distinguish microplastics from biological and natural particles. The method demonstrated potential for real-time, non-contact, in situ microplastic detection and water quality monitoring.
Detection of Secondary Microplastics in an Aquatic Mesocosm by Means of Object-Based Image Analysis
Researchers evaluated object-based image analysis for detecting secondary microplastics of polypropylene, polyethylene terephthalate, and low-density polyethylene suspended in an aquatic mesocosm under both still and turbulent conditions. The imaging approach successfully identified microplastics in both conditions, supporting its development as a monitoring tool for plastic particles in water.
A 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.
Aerial Remote Sensing of Aquatic Microplastic Pollution: The State of the Science and How to Move It Forward
A systematic literature review of aerial remote sensing for aquatic microplastic detection identified three main approaches — spectral characteristics, floating debris imaging, and AI-based analysis — all still largely experimental rather than operational.
New methodologies for the detection, identification, and quantification of microplastics and their environmental degradation by-products
This review covers new methodologies for sampling, detecting, identifying, and quantifying microplastics and their environmental degradation byproducts in natural water systems, highlighting advances in spectroscopic, mass spectrometric, and imaging-based approaches.
Optical innovations in microplastic analysis: a critical review of detection strategies
This review examines recent advances in optical methods for detecting microplastics, including spectroscopy, imaging techniques, and emerging sensor technologies like surface-enhanced Raman spectroscopy and fluorescence lifetime imaging. Researchers found that AI-driven computational models are significantly improving the speed and accuracy of microplastic identification. However, challenges remain with organic matter interference and the lack of standardized detection protocols across laboratories.
A field deployable imaging system for detecting microplastics in the aquatic environment
Researchers built a portable imaging system for detecting microplastics in water that can be deployed directly in the field rather than requiring laboratory analysis. The system uses a de-scattering algorithm to produce clear images even in turbid water conditions and can identify particles as small as 50 micrometers. This low-cost tool could make routine microplastic monitoring of rivers, lakes, and coastal waters much more practical and accessible.
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 Monitoring of Microplastics Filtrated from Wastewater Sludge and Suspended in Ethanol
Researchers developed an optical method combining three complementary light-based techniques to monitor microplastics filtered from wastewater sludge suspended in ethanol. The integrated approach enables more complete characterization of microplastics including their size, composition, and sedimentation behavior.
Towards the Development of Portable and In Situ Optical Devices for Detection of Micro-and Nanoplastics in Water: A Review on the Current Status
This review surveys the development of portable and in-situ optical devices for detecting micro- and nanoplastics in water, as most current detection methods are laboratory-based. Researchers evaluated emerging technologies including portable Raman and infrared spectroscopy, fluorescence-based sensors, and smartphone-integrated detection systems. The study identifies key technical challenges that must be overcome to enable real-time, field-based monitoring of plastic pollution in water.
Sorting microplastics from other materials in water samples by ultra-high-definition imaging
Researchers used a commercial particle analyzer with ultra-high-definition imaging to sort and identify microplastic particles in water samples. The device successfully distinguished between different plastic types based on how light scatters through or off their surfaces, and could separate microplastics from air bubbles and other non-plastic particles. The study demonstrates a relatively fast and accessible method for characterizing microplastic contamination in water.
Portable On-Site Optical Detection and Quantification of Microplastics
Researchers built a portable, on-site optical device to detect and quantify microplastics in water. The device addresses the challenge of detecting small, often translucent particles without a laboratory setting. Portable microplastic detection tools could enable real-time monitoring in the field, supporting faster environmental assessments.
Optofluidic light-droplet interaction for rapidly assessing the presence of plastic microspheres within aqueous suspensions
Scientists developed a new device that can quickly detect tiny plastic particles (called microplastics) in water by shining light through water droplets and measuring how much light gets blocked. The device can spot extremely small amounts of plastic pollution - even particles smaller than the width of a human hair. This technology could help us better monitor plastic contamination in drinking water and the environment, which is important since these tiny plastics can harm both ecosystems and human health.