A portable colorimetric immunosensor for highly sensitive point-of-care testing of leather artifacts.

A point-of-care testing (POCT) platform, i.e., a portable colorimetric immunosensor based on iron oxide magnetic beads and AuNPs, has been developed for detecting leather residues. The immunosensor demonstrates a linear detection range from 1 ng/mL to 10 µg/mL, with a limit of detection (LOD) of 0.985 ng/mL. The sensor exhibits high specificity and repeatability and performs effectively in detecting leather artifacts excavated from Inner Mongolia. Thus, the proposed colorimetric immunosensor not only enables the micro-detection of leather artifacts but also shows significant potential for on-site leather detection at archaeological sites.
Competing Interests: Declarations. Competing interests: The authors declare no competing interests.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)