We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Rapid detection of nanoplastics down to 20 nm in water by surface-enhanced raman spectroscopy
Summary
Researchers developed a silver nanoparticle-based surface-enhanced Raman spectroscopy method that can detect nanoplastics as small as 20 nanometers in water samples. By leveraging the natural aggregation between silver nanoparticles and plastic particles, they significantly amplified the detection signal without complex sample preparation. The technique offers a rapid and practical approach for identifying nanoplastic contamination in environmental water samples.
Plastic pollution represents a pressing global environmental issue, with microplastics (MPs) and nanoplastics (NPs) being ubiquitously found in both food and the environment. However, the investigation of NPs has been hampered by limited detection technologies, necessitating the development of advanced techniques. This study introduces a sol-based surface-enhanced Raman spectroscopy (SERS) approach for the swift detection of MPs and NPs in aqueous environment. By leveraging the aggregation effect between silver nanoparticles (Ag nanoparticles) and plastic particles, the plastic Raman signals is significantly enhanced, effectively lowering the detection limit. Utilizing Ag nanoparticles, plastic particles as small as 20 nm were detected in liquid samples, with a detection limit of 0.0005%. With the developed method, nanoplastic particles in seafood packaging samples were successfully tested, with concentration found to be at μg/L level. This method offers a rapid, economical, and convenient means of detecting and identifying MPs and NPs. The sensitivity of the method allows for capturing plastic signals within 2 min, making it valuable for aquatic environment contamination detection. SERS technology also holds promise for rapid plastic solution detection, potentially becoming a fast detection method for food safety.
Sign in to start a discussion.
More Papers Like This
Identification of polystyrene nanoplastics using surface enhanced Raman spectroscopy
Researchers demonstrated for the first time that surface-enhanced Raman spectroscopy (SERS) using silver nanoparticles can identify polystyrene nanoplastics as small as 50 nm in real water samples, providing a rapid detection method that bypasses conventional sample preparation and could advance environmental monitoring of nanoplastics previously invisible to standard analytical techniques.
Direct Detection of Polystyrene Nanoplastics in Water Using High-sensitivity Surface-enhanced Raman Scattering with Ag Nanoarray Substrates
Researchers developed a fast, sensitive detection method using silver nanostructures and laser light scattering (surface-enhanced Raman scattering) to identify polystyrene nanoplastics in water at concentrations as low as 10 micrograms per milliliter, offering a practical tool for monitoring nanoplastic contamination in real-world water sources.
Surface-enhanced Raman spectroscopy for the detection of microplastics
Researchers developed a surface-enhanced Raman spectroscopy method using gold nanoparticles to detect polystyrene microplastics at concentrations as low as 6.5 micrograms per milliliter, offering a new tool for detecting sub-micron plastic pollutants in water.
Surface enhanced raman spectroscopy based sensitive and onsite detection of microplastics in water utilizing silver nanoparticles and nanodendrites
This study developed a surface-enhanced Raman spectroscopy method using silver nanoparticles and nanodendrites for rapid, on-site detection of microplastics in water, achieving sensitive polymer identification without extensive sample preparation.
Separation and Identification of Nanoplastics via a Two-Phase System Combined with Surface-Enhanced Raman Spectroscopy
Researchers developed a new method for detecting nanoplastics at extremely low concentrations by combining silver nanoparticle films with a specialized light-scattering technique. The approach could identify polystyrene and PET nanoplastics at trace levels, offering a promising tool for monitoring plastic pollution that is too small for conventional detection methods.