Mangifera Indica Leaf Extract Mediated Gold Nanoparticles: A Novel Platform for Sensing of As(III)

This article reports a novel sensing scheme of arsenic (III) in aqueous medium. Gold nanoparticles (NPs) are synthesized using the chemical reduction method. Mangifera indica leaf extract is chosen as a functionalized agent to modify gold NPs surface. Arsenic containing vial has shown color change among other metal ions, indicating the selective detection capability of these modified gold NPs toward arsenic. From the UV-Vis. spectrometry measurement, limit of detection is found to be 1.2 ppb with an excellent linear range.