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Papers
20 resultsShowing papers similar to An analytical computed microtomography methodology for identification of microplastic fragments in aqueous media
ClearShape analysis of microplastic fragments: A computed microtomography study
Researchers applied X-ray microtomography (microCT) to characterize the 3D morphology of five secondary PET microplastic fragments approximately 2 mm in diameter, achieving a voxel size of 6.0 micrometers through optimized scanning and image processing, providing more detailed shape characterization of irregular fragments than conventional 2D microscopy allows.
High resolution X-ray microtomography as a tool for observation and classification of individual microplastics
Researchers investigated X-ray microtomography (microCT) as a non-destructive tool for characterizing microplastics embedded in sediment, demonstrating that the technique could provide detailed internal and external morphological data to help classify individual particles based on structure and composition.
From qualitative to quantitative measurement of small microplastics using multi-detector field flow fractionation coupled offline to microscopy and raman spectroscopy
This study developed an analytical method combining multi-detector field flow fractionation with offline microscopy and Raman spectroscopy to move from simply identifying microplastics to accurately measuring their quantity in small size ranges. Improved quantification methods are critical because current inconsistencies in measurement approaches make it difficult to set health-based exposure limits or compare contamination levels across studies.
From qualitative to quantitative measurement of small microplastics using multi-detector field flow fractionation coupled offline to microscopy and raman spectroscopy
This study developed an analytical method combining multi-detector field flow fractionation with offline microscopy and Raman spectroscopy to move from simply identifying microplastics to accurately measuring their quantity in small size ranges. Improved quantification methods are critical because current inconsistencies in measurement approaches make it difficult to set health-based exposure limits or compare contamination levels across studies.
Methodologies to characterize, identify and quantify nano- and sub-micron sized plastics in relevant media for human exposure: a critical review
This review critically evaluated methodologies for characterizing, identifying, and quantifying nano- and sub-micron sized plastics in media relevant to human exposure, highlighting analytical gaps and the need for standardized approaches.
Adding depth to microplastics for particle characterization and assessing settling behavior
Researchers developed a method for 3D characterization of microplastic particles to obtain volume and shape data beyond conventional 2D image analysis, improving accuracy in predicting settling behavior and estimating particle mass. Three-dimensional characterization was shown to substantially improve estimates of microplastic transport and sedimentation in water systems.
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.
Novel Techniques for Micro and Nanoplastics Analysis: A Review
This review critically examines both traditional and advanced analytical techniques for microplastic and nanoplastic analysis, covering sampling, identification, and quantification methods for particles smaller than 5 mm. The review summarizes current applications of microscopy, spectroscopy, and emerging cutting-edge approaches, highlighting the need for reliable and rapid standardized methods given the ubiquitous prevalence of microplastic contamination.
Quantifying micro- and nanoplastics
This work addresses methodological approaches for quantifying micro- and nanoplastics in environmental samples, examining analytical techniques, sampling strategies, and measurement challenges. The publication is part of the international research literature on standardizing plastic particle detection and quantification methods.
Towards a quantitative approach for the accurate analysis of blended microplastics based on 3-D micro-Raman spectroscopy
Researchers developed a quantitative 3D micro-Raman spectroscopy approach for accurately analyzing blended microplastic particles composed of multiple polymer types, addressing the challenge that environmentally released microplastics often originate from complex multi-polymer blended materials.
Adding depth to microplastics for particle characterization and assessing settling behavior
This study developed methods to characterize microplastics in three dimensions rather than the conventional two-dimensional approach, obtaining volume and shape data that improves predictions of how particles settle and transport in water systems. Three-dimensional characterization significantly improved settling rate predictions compared to 2D image-based estimates.
Advancing microplastic detection in zebrafish with micro computed tomography: A novel approach to revealing microplastic distribution in organisms
Researchers tested a new approach using X-ray micro-computed tomography (microCT) to detect and map microplastics inside zebrafish in three dimensions. The non-destructive imaging technique successfully identified polyethylene particles throughout the gut and revealed how their distribution changed over time. This method offers a promising alternative to traditional destructive techniques for studying how microplastics move through living organisms.
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.
Analytical methods for the determination of microplastics in the environment
This review examines analytical methods used to identify and quantify microplastics in environmental samples, covering microscopy, spectroscopy, and chromatographic techniques as applied to water, soil, and biological matrices. The work evaluates the advantages and limitations of each method, discussing their real-world applicability for standardised microplastic monitoring across different sample types.
Microplastic Detectability Investigation in Soils Using X‐Ray Microtomography
Researchers evaluated X-ray microtomography (microCT) for non-destructive 3D detection of microplastic fragments (PET, PEHD, PS, PP) in soils, achieving strong agreement between microCT and manual measurements (R² = 0.94-0.96) and demonstrating the method's capacity to differentiate polymer types via gray-level intensity differences.
Microplastics, an Emerging Concern: A Review of Analytical Techniques for Detecting and Quantifying Microplatics
This review surveyed analytical methods for detecting and quantifying microplastics published from 2000 to 2018, covering visual identification, spectroscopic, and pyrolysis-based techniques across environmental, food, and biological matrices. The authors identify the lack of standardized methods as a major barrier to generating comparable data on microplastic prevalence and health implications.
A systematic protocol of microplastics analysis from their identification to quantification in water environment: A comprehensive review
This review provides a systematic protocol for identifying and quantifying microplastics in water environments, covering sampling, extraction, and analytical techniques. Researchers evaluate the strengths and limitations of methods including visual sorting, spectroscopic analysis, and thermal techniques for characterizing microplastic pollution. The study emphasizes the urgent need for standardized methodologies to enable meaningful comparisons across different microplastic research studies.
New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples
This review assessed new analytical approaches for quantifying and identifying nanoplastics in environmental samples, highlighting fundamental challenges in detection due to their small size and the need for improved methods to understand nanoplastic contamination levels.
Analytical methods for microplastics in the environment: a review
Researchers reviewed classical and advanced analytical methods for detecting microplastics in the environment. The methods covered include visual analysis, electron microscopy, infrared and Raman spectroscopy, thermal analysis, mass spectrometry, and flow cytometry, providing a comprehensive overview of available tools for microplastic identification and quantification.
Methods for Micro‐ and Nanoplastics Analysis
This review examines analytical methods for detecting, identifying, and quantifying micro- and nanoplastics across terrestrial, aquatic, and atmospheric environments, evaluating identification and quantification techniques as prerequisites for effective remediation of these pervasive contaminants.