AgNPs Functionalized with Dithizone for the Detection of Hg2+ Based on Surface-enhanced Raman Scattering Spectroscopy

Mercuric ion (Hg2+), a poisonous metal that remained in water ecosystems, can severely damage the human central and peripheral nervous system kidneys. Consequently, rapid highly sensitive methods to determine trace Hg2+ are meaningful discuss. In recent years, for detecting heavy metals by complexation reactions have emerged one after another. We proposed novel approach of surface-enhanced Raman scattering (SERS) quantitative analysis samples using dithizone (DTZ) as reporter. DTZ-modified silver nanoparticles (AgNPs) produced strong SERS signal. presence Hg2+, DTZ capture composing stable structure, resulting leaving surface AgNPs, with an accompanying decrease The assay showed linear range 10–4–10–8 M, limit detection 9.83 × 10–9 M. sensor has low cost, speed, uncomplicated sample pretreatment. Furthermore, this method be successfully utilized detect rapidly samples, which sheds new light on environment.