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61,005 resultsShowing papers similar to Magnetic labelling and extraction of micrometer-sized microplastics from sandy soil
ClearMagnetic labelling and extraction of micrometer-sized microplastics from soil
Researchers developed a magnetic labeling and extraction method for micrometer-sized microplastics from soil, exploiting the glass transition of polystyrene by heating particles to embed iron oxide nanoparticles on their surface, allowing efficient magnetic separation of small MPs from complex soil matrices.
A novel method for magnetic labelling and extraction of small-sized microplastics (4 μm) from soil
Researchers developed a novel magnetic labelling method to improve extraction efficiency of small microplastics (4 µm polystyrene spheres) from soil by heating particles with Fe3O4 magnetic nanoparticles to embed nanoparticles in the microplastic surface, enabling magnetic separation. Optimizing the incubation at 90°C for 2.5 hours achieved a recovery rate of 91.67% from water matrices, demonstrating potential for extracting sub-10 µm particles that conventional density separation methods miss.
A novel method for magnetic labelling and extraction of small-sized microplastics (4 μm) from soil
Researchers developed a magnetic labelling approach to extract small microplastics (4 µm) from soil by binding Fe3O4 magnetic nanoparticles to the microplastic surface through controlled heating, then using magnetic separation to isolate particles. The method achieved a recovery rate of approximately 92% under optimized conditions, offering a practical solution for quantifying sub-10 µm microplastics from complex soil matrices.
Adsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
Magnetic Extraction of Microplastics from Environmental Samples
A magnetic extraction method was developed using hydrophobic iron nanoparticles that bind to plastic surfaces, achieving 92% recovery of 10–20 μm polyethylene and polystyrene beads and 84–93% recovery of six polymer types from seawater and sediment. The method offers a practical, adaptable approach to extracting microplastics from complex environmental matrices without the limitations of density-based separation.
Polystyrene microplastics removal from aqueous solutions by magnetic iron nanoparticles
Researchers tested magnetic iron oxide (Fe₃O₄) nanoparticles for removing polystyrene microplastics from water, systematically optimizing concentration, dosage, contact time, and pH, and found effective microplastic removal through adsorption interactions that could be leveraged for environmental remediation.
Remediation strategies for micro/nanoplastic pollution using magnetic nanomaterials
This review surveys recent developments in using magnetic nanomaterials, such as iron oxide nanoparticles and magnetic composites, to remove micro- and nanoplastics from water and soil. These materials can capture plastic particles through adsorption, help clump them together for removal, or even break them down, and they can be magnetically recovered for reuse. The study highlights that magnetic nanomaterials offer a promising approach for cleaning up plastic pollution, though challenges remain in scaling up for real-world use.
Impact of particle size and oxide phase on microplastic transport through iron oxide-coated sand
Researchers studied how different types of iron oxide coatings on sand affect the movement of polystyrene microplastics through soil. They found that magnetite-coated sand retained the most microplastics, while goethite-coated sand retained the least, with results matching theoretical predictions. The findings suggest that naturally iron-rich soils could serve as effective barriers to prevent microplastic transport through groundwater systems.
Enhanced removal of aged and differently functionalized polystyrene nanoplastics using ball-milled magnetic pinewood biochars
Researchers developed magnetic biochars from pinewood using ball-milling with iron oxide nanoparticles, achieving highly effective removal of various functionalized and aged polystyrene nanoplastics from water with easy magnetic separation and reusability.
Study on Harnessing Ferrofluid Technology for Efficient Microplastic Extraction from Ocean Water and Optimization of Manufacturing Materials
Researchers developed a ferrofluid-based method for extracting microplastics from ocean water, using magnetic attraction to selectively capture plastic particles mixed with ferrofluid. The technique offers a novel, efficient approach for ocean microplastic remediation and sample collection.
The use of magnetically modified microplastics in environmental studies
This Slovenian study tested iron oxide-coated magnetic microplastics as research tools, finding they could be efficiently separated from water and sediment using magnets (over 90% recovery) but proved much harder to retrieve from soil (around 10% recovery). Toxicity tests confirmed the magnetic coating did not harm aquatic plants, and iron leaching into water was negligible. Magnetic microplastics offer a practical way to track and recover particles in laboratory experiments, helping researchers study microplastic behavior in sediments without permanently contaminating test systems.
Poor extraction efficiencies of polystyrene nano- and microplastics from biosolids and soil
Researchers tested the efficiency of flotation-based extraction methods for recovering polystyrene nano- and microplastics (0.05-100 µm) from biosolids and soil, finding poor extraction efficiencies that varied by particle size and sample matrix. The results highlight significant methodological challenges in quantifying nano- and microplastics in terrestrial matrices and the need for standardised extraction protocols.
Charge mediated interaction of polystyrene nanoplastic (PSNP) with minerals in aqueous phase
Researchers investigated how polystyrene nanoplastics interact with common soil and sediment minerals, finding that positively charged iron oxide minerals (goethite and magnetite) strongly adsorb nanoplastics via electrostatic attraction and hydrogen bonding, while negatively charged clay minerals do not — providing mechanistic insight into how nanoplastics may accumulate in iron-rich soils and sediments.
Magnetic separation and degradation approaches for effective microplastic removal from aquatic and terrestrial environments
This review covers methods for removing microplastics from water and soil environments using magnetic separation and degradation technologies. Researchers describe how microplastics can be captured using magnetic particles and then broken down through biodegradation, advanced oxidation, or electrochemical processes. The study highlights these combined approaches as promising strategies for addressing microplastic pollution across both aquatic and land-based ecosystems.
Polystyrene Nanoplastics-Enhanced Contaminant Transport: Role of Irreversible Adsorption in Glassy Polymeric Domain
Polystyrene nanoplastics were shown to enhance the transport of co-occurring contaminants through soil by irreversibly adsorbing them onto the glassy polymer domain, facilitating their spread in the environment. The findings indicate that nanoplastics in soil can act as mobile carriers for contaminants that would otherwise remain bound to soil particles, potentially increasing leaching into groundwater.
Magnetic Extraction of Weathered Tire Wear Particles and Polyethylene Microplastics
Researchers developed a hydrophobic magnetic nanocomposite that can rapidly extract both polyethylene microplastics and tire wear particles from freshwater using magnets, offering a low-cost method for removing these pollutants from environmental water samples.
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.
Efficient magnetic adsorption of polystyrene nanoplastic from aqueous solutions by eco-friendly Fe3O4 nanoparticles: Removal, kinetic and isotherm modeling studies
Researchers synthesized iron oxide magnetic nanoparticles using pine resin extract (a green chemistry approach) and demonstrated they remove polystyrene nanoplastics from water with 95–99% efficiency via magnetic separation, achieving an adsorption capacity of 454 mg/g through a monolayer chemisorption process.
An effective method for the rapid detection of microplastics in soil
A rapid and practical method was developed for detecting and identifying microplastics in soil, addressing the need for faster alternatives to existing time-consuming techniques. The method uses a combination of sieving and staining approaches to accelerate microplastic extraction and identification from soil samples.
Robust polyaniline coating magnetic biochar nanoparticles for fast and wide pH and temperature range removal of nanoplastics and achieving label free detection
Researchers created polyaniline-coated magnetic biochar nanoparticles from agricultural waste and demonstrated they can remove polystyrene nanoplastics from water at 95–99% efficiency across a wide pH range (1–10) and temperature range, while also functioning as an electrochemical sensor for nanoplastic detection down to 1.26 μg/L.
Removal of microplastics from water by magnetic nano-Fe3O4
Researchers developed a method for removing microplastics from water using magnetic iron oxide nanoparticles that attach to plastic surfaces, allowing the particles to be pulled out with a magnet. The technique achieved removal rates above 80% for common microplastic types in environmental water samples including river water, sewage, and seawater, suggesting a practical approach for water treatment.
Rapid extraction of high- and low-density microplastics from soil using high-gradient magnetic separation
High-gradient magnetic separation was developed as a method to extract both high- and low-density microplastics from soil, overcoming the limitation of conventional density-based separation that often misses heavier plastic types. The approach improved overall microplastic recovery and offers a more complete picture of soil contamination.
Extraction and concentration of nanoplastic particles from aqueous suspensions using functionalized magnetic nanoparticles and a magnetic flow cell
Researchers developed a method using hydrophobic magnetic nanoparticles to capture and concentrate nanoplastics — plastic particles smaller than 1 micrometer — from water samples, achieving recovery rates of 57–85% across different water types including freshwater and seawater. This technique addresses a major gap in nanoplastic research by making it possible to detect and measure these nearly invisible particles in real environmental samples.
An efficient, cost-effective, and environmentally friendly protocol for extracting microplastics from soil samples
Researchers developed an efficient, cost-effective, and environmentally friendly protocol for extracting microplastics from soil samples, addressing the lack of standardized methods and evaluating extraction performance across different soil matrices.