The sensitive, anion-selective detection of arsenate with poly(allylamine hydrochloride) by single particle plasmon-based spectroscopy

Gold nanoparticles as efficient sensors in colorimetric detection of toxic metal ions: A review

“…On addition of As 3+ ions to the solution, arsenate form electrostatic complexes with the amine groups of the conjugated molecule . This alters the Rayleigh scattering profiles of GNPs, which is thereby reflected by a measurable shift in SPR peak [53], thus providing prospect for a Surface Plasmon Resonance (SPR) mediated detection of As 3+…”

Nitrogen-doped carbon dots/Fe3+-based fluorescent probe for the “off–on” sensing of As(v) in seafood

“…Some methods have been developed to address the above problems, for instance, plasmon spectroscopy, 12 UV-visible spectroscopy, 13 visual colorimetry 14 and fluorescent spectrometry. 15 Among these, fluorescence sensing is a powerful tool that has attracted attention for its low cost, superior sensitivity, and easy analysis.…”