Green-synthesized selenium nanoparticles using garlic extract and their application for rapid detection of salicylic acid in milk

Abstract

The highly selective, sensitive, and quick interference green synthesis-based sensing of possible milk adulterants i.e., salicylic acid has been reported here. Salicylic acid interacts with nanoparticles through strong bonding interactions, hence resulting in an interruption within the formation of selenium nanoparticles which is confirmed by UV-VIS spectroscopy, scanning electron microscopy, and x-ray diffraction. This interaction in the synthesis of nanoparticles resulted in transmittance wavelength that decrease with the increasing amount of salicylic acid, showing strong binding of selenium nanoparticles with adulterant thereby permitting in-situ fast detection of salicylic acid from milk having a limit of detection at 10^-3 mol and linear coefficient correlation of 0.9907.

Keywords:
adulteration; green synthesis; selenium nanoparticles; salicylic acid; aggregation