Voltammetric simultaneous determination of Cu2+ , Cd 2+ and Pb2+ in full aqueous medium using organic nanoparticles of disulfide based receptor

Abstract

Disulfide based receptor was prepared using single step condensation reaction and suspended into organic nanoparticles to extend its practical application in aqueous samples. The prepared nanoparticles were used for the simultaneous recognition of three different metallic species (Cu2+, Cd2+, and Pb2+) in aqueous media through voltammetric studies. These metals can be determined simultaneously and without interferences from any of the other potential interferent metal ions, as different signals are displayed in cyclic as well as differential pulse voltammograms, with a detection limit of 193.0nM for Cu2+, 52.0nM for Cd2+ and 32.0nM for Pb2+. The study was extended to real sample analysis by preparing the artificial mixtures of said metal ions.