AI Article Synopsis
- Researchers used glass fiber paper with silver nanoparticles to enhance the detection of trace substances in fluids using surface-enhanced Raman spectroscopy (SERS).
- The approach combines electrophoresis and field amplification sample stacking to concentrate analytes, significantly improving detection limits.
- This method demonstrates the ability to detect organic contaminants at very low levels in applications such as aquaculture and food safety.
Article Abstract
To achieve sensitive detection of trace substances in fluids by surface-enhanced Raman spectroscopy (SERS), effective enrichment of molecules at subwavelength regions (hot spots) with a large enhancement is adopted. In this work, a glass fibre paper with Ag nanoparticles (AgNPs) is employed for electrodynamic enrichment of analytes in fluids by paper electrophoresis integrated with field amplification sample stacking (FASS) and capillary effects to obtain both Raman and SERS convenient and sensitive detection. With the help of electrophoretic enrichment on the glass fibre paper and surface plasmon enhancement on the AgNPs, this paper electrophoretic enrichment could improve the detection limit of Raman and SERS detection by more than an order of magnitude, even achieving a SERS detection limit of 10 M for Nile Blue A. Furthermore, this flexible SERS detection method can also detect trace organic contaminants at the ppt level in aquaculture and food applications.
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| http://dx.doi.org/10.1016/j.foodchem.2023.137416 | DOI Listing |
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