We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Aminated Carbon Nanofiber-Mediated Nanoconfined Liquid Phase Nanoextraction Coupled with Py-GC/MS for Sensitive Determination of Polystyrene Nanoplastics
Summary
Researchers developed a novel method combining aminated carbon nanofiber-based nanoextraction with pyrolysis-gas chromatography-mass spectrometry for detecting polystyrene nanoplastics in water. The technique achieved highly sensitive detection of nanoplastics at trace levels, offering a promising tool for monitoring nanoplastic contamination in environmental water samples.
Abstract Nanoplastics pose severe ecological and human health risks due to their high reactivity and bioaccumulation potential, but their efficient extraction and precise detection remain challenging. Herein, a novel integrated method combining nanoconfined liquid phase nanoextraction (NLPNE) based on aminated carbon nanofibers/ carbon fibers (NH 2 -CNFs/CFs) with pyrolysis-gas chromatography-mass spectrometry (Py/GC-MS) was developed for the sensitive determination of polystyrene (PS) nanoplastics in aqueous samples. NLPNE plays a pivotal role: the nanoconfined spaces formed by entangled CNFs accelerate PS mass transfer via short-range diffusion, while amino groups enhance specific electrostatic interactions with negatively charged PS, achieving rapid and selective pre-enrichment. Optimized with acetonitrile as the nanoconfined solvent, the method reaches extraction equilibrium quickly, following pseudo-first-order kinetics and Langmuir monolayer adsorption. Direct Py-GC/MS analysis using styrene trimer (m/z=312) as the marker yields a low detection limit of 0.56 μg/L. The method provided a novel technical solution for the detection of nanoplastics in complex matrices and facilitating future studies on their environmental behaviors.
Sign in to start a discussion.
More Papers Like This
ACFs-NH2 developed for dispersive solid phase extraction combined with Py-GC/MS for nanoplastic analysis in ambient water samples
Researchers developed a sample preparation method using amino-functionalized activated carbon fibers paired with pyrolysis-gas chromatography/mass spectrometry to detect nanoplastics in water, achieving recovery rates above 98% for polystyrene nanoplastics in seawater with detection limits as low as 20 µg/L.
Identification of polystyrene nanoplastics from natural organic matter in complex environmental matrices by pyrolysis–gas chromatography–mass spectrometry
Researchers used pyrolysis-gas chromatography-mass spectrometry to identify polystyrene nanoplastics in environmental samples containing natural organic matter, developing methods to distinguish nanoplastic signals from complex organic background matrices in water.
Evaluating the Occurrence of Polystyrene Nanoparticles in Environmental Waters by Agglomeration with Alkylated Ferroferric Oxide Followed by Micropore Membrane Filtration Collection and Py-GC/MS Analysis
Researchers developed a sensitive detection method using alkylated iron oxide nanoparticles to capture nanoplastics from water for analysis by pyrolysis-GC/MS, achieving detection limits of 0.02-0.03 micrograms per liter. Polystyrene nanoplastics were detected in 11 of 15 environmental water samples at concentrations up to 0.73 micrograms per liter, confirming their widespread presence.
Enrichment of Nanoplastics in Waters Using Magnetic Solid Phase Extraction With Magnetic Biochar Adsorbents and Their Determination by Pyrolysis Gas Chromatography‐Mass Spectrometry
Researchers developed a method combining magnetic biochar with pyrolysis gas chromatography to detect and measure nanoplastics in water at very low concentrations. The magnetic biochar efficiently captured polystyrene nanoplastics from both tap and river water, achieving detection limits below 1 microgram per liter. The approach offers a practical and sensitive tool for monitoring nanoplastic contamination in drinking water sources.
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.