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Determination of Polystyrene Nanoparticles in Aqueous Solutions by Dual-Beam Thermal Lens Spectrometry
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Researchers demonstrated that thermal lens spectrometry can detect polystyrene nanoparticles as small as 65 and 80 nanometers in water at very low concentrations, down to 0.0005 mg/L. The technique also revealed how increasing nanoparticle concentrations change the thermal properties of the water in a nonlinear way. The study suggests thermal lens spectrometry could be a sensitive, practical tool for monitoring nanoplastic contamination in aquatic environments.
Polymer micro- and nanoparticles, commonly known as microplastics, are significant environmental pollutants. Even low concentrations of microplastics can affect ecosystems and human health, underscoring the urgent need in detecting these particles in low concentrations while simultaneously assessing the physicochemical parameters of the studied systems. Thermal lens spectrometry (TLS) has effectively detected polystyrene particles measuring 65 and 80 nm within a concentration range of 0.0005–0.15 mg/L in their aqueous dispersions. The comprehensive TLS data also facilitated the evaluation of the thermal diffusivity of these solutions. An increase in the concentration of polystyrene nanoparticles in water results in a nonlinear change in thermal diffusivity.
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Identification of polystyrene nanoplastics using surface enhanced Raman spectroscopy
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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.
Sensors for Polystyrene Nanoplastics Detection in Water Samples
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This review assessed recent advances in sensor and biosensor technologies for detecting polystyrene nanoplastics in complex aquatic samples. The authors identified optical, electrochemical, and surface-enhanced Raman approaches as the most promising strategies, while highlighting the ongoing challenges of matrix interference and low-concentration detection limits.
Direct Detection of Polystyrene Nanoplastics in Water Using High-sensitivity Surface-enhanced Raman Scattering with Ag Nanoarray Substrates
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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.
Quantitative and sensitive analysis of polystyrene nanoplastics down to 50 nm by surface-enhanced Raman spectroscopy in water
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Researchers developed a highly sensitive method using surface-enhanced Raman spectroscopy to detect and quantify polystyrene nanoplastics as small as 50 nanometers in water samples. The technique achieved detection limits far below what conventional methods can measure, enabling the identification of nanoplastics at environmentally relevant concentrations. This advancement addresses a critical gap in nanoplastic monitoring, as most existing methods cannot reliably detect particles at such small sizes.
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
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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.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.