Enhancement of plasmonic resonance through an exchange reaction on the surface of silver nanoparticles: application to the highly selective detection of triazophos pesticide in food and vegetable samples

Abstract

The proposed method is based on the aggregation of AgNPs due to the exchange of citrate ions from the surface of NPs with triazophos pesticide and causes the color change and red shift in LSPR of AgNPs in the UV-visible region used as sensing probe.