ScholarWorks@성균관대학교

초록

Nanoplastics pose severe environmental and biological risks, yet their diverse types and sizes create substantial challenges for sensor development. Drawing inspiration from epizoochory—the process by which seeds disperse by adhering to animals, cloth, and other surfaces—we developed a novel sensor to quantitatively assess nanoplastics in aquatic environments. Using the strong affinity of amyloid oligomers for nanoplastics, cyclic voltammetry measures the increase in redox current as amyloids detach from the surface of bumpy gold electrodes, providing quantification of nanoplastics. This method achieves a sensitivity of 0.679 ng/mL, effectively detecting nanoplastics regardless of their type, size, or shape. The sensor performs well in various sample matrices, including seawater, soil, and biological specimens such as water fleas and fish roe. Our findings suggest that amyloid oligomer-coated electrodes hold promise as a universal tool for sensing aquatic nanoplastics, supporting precise pollution monitoring and ecological impact assessments. © 2025 Elsevier B.V.

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