Using Electrode Made of Carbon Nanotubes and Bismuth Oxide for the Determination of Metal Concentration by Anodic Stripping Voltammetry

Figure 7

(a) DP-ASV of Cd(II), Pb(II), and In(III) and the calibration curve of (b) Cd(II), (c) In(III), and (d) Pb(II). Conditions: [Pb(II)]; [Cd(II)] = 1.5, 6, 10, 15, and 20 μg·L⁻¹; [In(III)] = 2.5, 7, 11.5, 15, and 20 μg·L⁻¹; supporting electrolyte mixture of 0.1 M KI and acetate buffer. Other conditions are as in Figure 1.

(a)

(b)

(c)

(d)