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

<div>(a) DP-ASVs curves obtained for the oxidation of Zn(II), Cd(II), Pb(II), and Cu(II) at equal concentrations in the 0.1 acetate buffer solution (pH = 5): 5.0, 10.0, 15.0, 20.0, 30.0, 40.0, 50.0, 70.0, 90.0, and 110.0 ppb; (b) linear plots of Ipa,Cu, Ipa,Pb, Ipa,Cd, and Ipa,Zn with their concentration (acetate buffer: pH 5; Bi(III): 500 ppb; accumulation potential –1.6 V; accumulation time 110 s; accumulation potential –1.6 V; accumulation time 110 s; pulsed amplitude 0.07 V; scan rate 0.021 V·s−1).</div>

Advances in Materials Science and Engineering

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Figure 6

Figure 6: 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 6 | Simultaneous Determination of Zn(II), Cd(II), Pb(II), and Cu(II) Using Differential Pulse Anodic Stripping Voltammetry at a Bismuth Film-Modified Electrode 