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Electrochemical and Surface‐Enhanced Raman Scattering Coupling for Dual‐Mode Sensing of Nanoplastics
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This study developed a dual-mode detection system combining electrochemical analysis with surface-enhanced Raman scattering to identify nanoplastics in environmental samples, addressing the challenge of detecting NPs by material, size, and surface chemistry simultaneously.
The existence of nanoplastics (NPLs) in the environment has received continued attention in recent years due to their potential toxicological impacts. Nevertheless, there is a significant shortage of comprehensive considerations for the detection of NPLs. Specifically, the material, particle size, surface chemistry, and adsorption of xenobiotics of NPLs all shape their transport, toxicity, and environmental fate. Accurate NPL analysis is therefore essential for risk assessment and environmental monitoring. Surface‐enhanced Raman spectroscopy (SERS) and electrochemical (EC) sensing have made significant progress in the detection of plastic contaminants, especially NPLs, which rely on their high sensitivity, portability for real‐time applications in the field, and fascinating cost‐effectiveness. Unfortunately, the rational technological coupling of both of them (EC‐SERS) to improve NPLs detection performance has not yet been considered. In this perspective, the potential of EC‐SERS in the analysis of NPLs is elucidated, and the respective application strengths and advances of the two technologies are highlighted, as well as the opportunities and challenges of their coupling.
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This review examines plasmonic noble metal nanomaterials (gold, silver, and their alloys) as analytical tools for detecting and quantifying micro- and nanoplastics in environmental samples. Plasmonic materials exploit surface-enhanced Raman scattering and other optical effects to achieve highly sensitive detection of plastic particles.
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Researchers combined a metal-based separation technique with machine learning and surface-enhanced Raman spectroscopy to detect and classify nanoplastics in environmental samples. The method achieved high accuracy in identifying different types of nanoplastics at very low concentrations. This approach could make it significantly easier and more reliable to monitor nanoplastic contamination in real-world water and soil samples.
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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.
Electrochemical approaches for detecting micro and nano-plastics in different environmental matrices
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This review evaluates electrochemical sensor technologies as alternatives to conventional spectroscopy methods for detecting micro- and nanoplastics in environmental samples. Researchers found that electrochemical approaches offer advantages in cost, portability, and speed, making them better suited for widespread field monitoring. The study identifies key technical challenges that need to be resolved before these sensors can be broadly adopted for routine environmental surveillance.
Simultaneous detection of nanoplastics and adsorbed pesticides by surface-enhanced Raman spectroscopy
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Researchers used Surface-Enhanced Raman Spectroscopy (SERS) with silver and gold nanoparticles to simultaneously detect nanoplastic particles and pesticides adsorbed onto their surfaces at environmentally relevant concentrations. The technique successfully identified both the plastic carrier and the co-transported contaminant in a single measurement, demonstrating its utility for assessing the combined hazard of nanoplastic-pesticide complexes.
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