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Papers
20 resultsShowing papers similar to Separate determination of polystyrene nanoplastics and microplastics in water by membrane filtration and gel permeation chromatography-ultraviolet detection analysis
ClearHigh sensitivity in quantitative analysis of mixed-size polystyrene micro/nanoplastics in one step
Scientists developed a new method using filtration combined with surface-enhanced Raman spectroscopy to separate and identify mixed-size micro- and nanoplastics in a single step. The technique achieved detection limits as low as parts-per-billion concentration levels and was successfully tested in real-world tap water samples. Reliable methods for detecting nanoplastics in drinking water are crucial for understanding the extent of human exposure through water consumption.
Validated method for polystyrene nanoplastic separation in aqueous matrices by asymmetric-flow field flow fraction coupled to MALS and UV–Vis detectors
Researchers developed and fully validated a method to accurately measure nanoplastic particle sizes (30–490 nm) in water using a technique that combines flow separation with light-scattering detection. Having a validated analytical method is a critical step for standardizing how nanoplastics are measured across laboratories, enabling more consistent assessment of their environmental risks.
A membrane cascade for size-based separation and concentration of nanoplastics in environmental waters
Researchers developed a cascade system of membrane filters that can separate and concentrate nanoplastics from environmental water samples by size. They demonstrated that the system effectively isolates nanoplastic particles while tracking recovery rates using fluorescent markers. The technology addresses a major challenge in nanoplastic research by providing a reliable method to extract these extremely small particles from water for accurate measurement and analysis.
Trace analysis of polystyrene microplastics in natural waters
Researchers developed and evaluated analytical methods for trace-level quantification of polystyrene microplastics and nanoplastics in natural water samples, addressing key challenges in sensitivity and accuracy that limit realistic environmental risk assessment.
Identification and Quantification of Nanoplastics in Surface Water and Groundwater by Pyrolysis Gas Chromatography–Mass Spectrometry
Researchers developed a method combining ultrafiltration and pyrolysis gas chromatography-mass spectrometry to identify and quantify nanoplastics in surface water and groundwater. The study successfully detected six types of plastic polymers at the nanoscale in environmental water samples, providing much-needed quantitative data on nanoplastic pollution in real-world water sources.
A method for efficient separation of polystyrene nanoplastics and its application in natural freshwater
Researchers developed a method using asymmetrical flow field-flow fractionation (AF4) coupled with multiple detectors to efficiently separate and characterize polystyrene nanoplastics by particle size in freshwater environments, demonstrating its applicability for analysing nanoplastic environmental behaviour in natural freshwater samples.
Separation and enrichment of nanoplastics in environmental water samples via ultracentrifugation
An ultracentrifugation protocol was developed and validated for separating and concentrating nanoplastics from environmental water samples, enabling detection of particles below 100 nm that are otherwise lost during conventional filtration-based processing, and revealing nanoplastics in river water samples at concentrations not previously quantified.
A green approach to nanoplastic detection: SERS with untreated filter paper for polystyrene nanoplastics
Researchers developed a simple and affordable method to detect nanoplastics in water using silver nanoparticles and ordinary filter paper, achieving detection of polystyrene particles as small as 100 nanometers. The method successfully identified nanoplastics in both drinking water and tap water samples. Better detection tools like this are important because they make it easier to monitor nanoplastic contamination in the water people actually drink, helping researchers understand real-world exposure levels.
Separation and identification of nanoplastics in tap water
Researchers developed a method to separate and identify nanoplastics in tap water, detecting particles as small as 58 nanometers made of common plastics like polyethylene, polystyrene, and PVC. They found nanoplastic concentrations of roughly 1.7 to 2.1 micrograms per liter in tap water samples. The study provides the first feasible approach for measuring these extremely tiny plastic particles in drinking water, highlighting a potential health concern for consumers.
Identification of Trace Polystyrene Nanoplastics Down to 50 nm by the Hyphenated Method of Filtration and Surface-Enhanced Raman Spectroscopy Based on Silver Nanowire Membranes
Researchers developed a method combining silver nanowire membrane filtration with surface-enhanced Raman spectroscopy to detect trace polystyrene nanoplastics down to 50 nm in water, addressing a critical gap in nanoplastic analytical techniques.
Closing the gap between small and smaller: towards a framework to analyse nano- and microplastics in aqueous environmental samples
This paper proposes an analytical framework for measuring both nano- and microplastics across a broad size spectrum in water samples, addressing the gap between methods optimized for either large microplastics or nanoparticles. A unified size-spanning approach is needed to fully characterize plastic pollution in aquatic environments where particles across many orders of magnitude coexist.
Experimental Evaluation of the Process Performance of MF and UF Membranes for the Removal of Nanoplastics
Researchers evaluated microfiltration (MF) and ultrafiltration (UF) membrane performance for removing polystyrene nanospheres (120 and 500 nm) from water, finding that UF membranes can achieve high removal of nanoplastic particles that conventional wastewater treatment misses.
Development and testing of a fractionated filtration for sampling of microplastics in water
Researchers developed and tested a fractionated filtration system for sampling microplastics in water bodies, proposing a standardized sampling concept that accounts for plastic-specific properties to improve comparability of microplastic data across different studies and environments.
Sequential Isolation of Microplastics and Nanoplastics in Environmental Waters by Membrane Filtration, Followed by Cloud-Point Extraction
Researchers developed a two-step method combining membrane filtration and cloud-point extraction to sequentially isolate microplastics and nanoplastics from water, achieving over 90% recovery for MPs on membrane filters and over 93% recovery for NPs in the filtrate for subsequent Py-GC/MS analysis.
Separation and Analysis of Microplastics and Nanoplastics in Complex Environmental Samples
This review examined separation and analysis methods for microplastics and nanoplastics in complex environmental samples, covering density separation, filtration, spectroscopic identification, and emerging approaches for sub-micron particles. The authors identify detection of nanoplastics as a critical unresolved methodological challenge for understanding full plastic contamination in the environment.
Nanoplastics in aquatic environments: Origin, separation and characterization: Review
This review covers the origins, separation methods, and characterization of nanoplastics in aquatic environments. Nanoplastics (1–100 nm) are particularly concerning because their tiny size gives them a large surface area for adsorbing pollutants and allows them to penetrate biological barriers more easily than larger microplastics.
Evaluation of Nanoparticle Tracking Analysis (NTA) for the Measurement of Nanoplastics in Drinking Water
Researchers evaluated nanoparticle tracking analysis (NTA) as a method for measuring nanoplastics in drinking water, finding that NTA could detect polystyrene nanoplastics at environmentally relevant concentrations but struggled to discriminate plastic particles from natural organic nanoparticles in real water samples. The authors identified NTA as a useful screening tool requiring complementary chemical identification methods for definitive nanoplastic quantification.
Protein Corona-Mediated Extraction for Quantitative Analysis of Nanoplastics in Environmental Waters by Pyrolysis Gas Chromatography/Mass Spectrometry
Scientists developed a new method for detecting and measuring nanoplastics in environmental water samples using a protein-based extraction technique paired with specialized mass spectrometry. The approach works by adding a protein that naturally coats nanoplastic particles, which can then be separated from the water and analyzed. Using this method, researchers detected nanoplastics in both river water and wastewater treatment plant samples, demonstrating a practical tool for monitoring these tiny but potentially harmful contaminants.
Filter-less separation technique for micronized anthropogenic polymers from artificial seawater
Researchers developed a filter-less method to separate anthropogenic polymer particles from artificial test media, improving the accuracy of laboratory studies on microplastic behavior and toxicity. Cleaner separation techniques reduce contamination artifacts and improve the reliability of microplastic exposure experiments.
Monitoring Poly(methyl methacrylate) and Polyvinyl Dichloride Micro/Nanoplastics in Water by Direct Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry
Researchers developed a novel method for detecting and quantifying micro- and nanoplastics in water using solid-phase microextraction coupled with gas chromatography-mass spectrometry. The technique successfully identified poly(methyl methacrylate) and polyvinyl dichloride particles at low concentrations without requiring extensive sample preparation. The study offers a simpler, more sustainable, and more sensitive approach for monitoring plastic particle contamination in aqueous environments.