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Gold nanoparticles-anchored peptides enable precise colorimetric estimation of microplastics

ABSTRACT: Summary Microplastics (MPs, particle size < 5 mm) are an emerging contaminant in aquatic environment, which have attracted increasing attention worldwide. In this study, a colorimetric method for MPs detection was developed based on gold nanoparticles (AuNPs)-anchored peptides (LCI or TA2), which are able to specifically recognize and adhere to polypropylene (PP) or polystyrene (PS). The AuNPs-anchored peptides accumulated on the surface of MPs, rendering a color change from red to gray-blue and transforming the surface plasmon absorption intensity and wavelength. The designed method presented high selectivity, stability, and reproducibility, with a detection range of 2.5–15 μg/mL. The results demonstrated that the developed approach will be valuable in the precise, facile, and cost-effective estimation of MPs in different matrices, regulating the control over MPs pollution and its hazardous impact on health and ecosystems. Graphical abstract Highlights • Gold nanoparticles (AuNPs)-anchored peptide (LCI/TA2) probes were constructed• Rapid and accurate detection of polypropylene or polystyrene microplastics was realized• The developed method is of great value in monitoring the microplastics pollution Environmental toxicology; Hazard identification; Microenvironment

SUBMITTER: Zhao J

PROVIDER: S-EPMC10212970 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature

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