Research Article

Simultaneous Determination of Zn(II), Cd(II), Pb(II), and Cu(II) Using Differential Pulse Anodic Stripping Voltammetry at a Bismuth Film-Modified Electrode

Figure 1

(a) Differential pulse stripping voltammograms of 15 ppm Zn(II), Cd(II), Pb(II), and Cu(II) at GCE without and with 500 ppb Bi(II) in 0.1 M acetate buffer (pH 4.5); (b) the influence of the bismuth ion concentration on anodic current peaks (Ipa) (accumulation for 120 s at –1.4 V).
(a)
(b)