Simultaneous quantification of Hg (II) and Pb (II) by square wave anodic stripping voltammetry using Bi/graphite electrode

These data show the cyclic voltammograms (CV) of a Bi/graphite electrode synthesized with different conditions (Bi (III) concentration and deposition time (s)) in order to evaluate the best conditions by means of a Design of Experiments (DOE). The performance of this electrode was tested by means of a series of Square Wave Anodic Stripping Voltammetry (SWASV) at different concentrations of Hg (II) and Pb (II), where the linear relationship between the concentration of these heavy metals and the current measured in uA was demonstrated. In conclusion, an excellent performance of the synthesized electrode was demonstrated in terms of selectivity and sensitivity, achieving detection limits of 1 ppb and 10 ppb for Hg (II) and Pb (II), respectively.