Selective interaction of As(iii) and luminol for the development of electrochemiluminescence-based arsenic(iii) sensors

Abstract

A newly identified selective interaction between As(III) and luminol enhances the formation of excited 3-aminophthalate, thereby amplifying the ECL signals. The luminol/As(III) ECL response was observed across all studied electrodes; however, Au/BDD was selected for its highest sensitivity, driven by the strong electrocatalytic activity of the immobilized gold nanoparticles.