Preparation and Evaluation of Acetabularia-Modified Carbon Paste Electrode in Anodic Stripping Voltammetry of Copper and Lead Ions

Figure 4

The effects of accumulation time (1 to 5 minutes) for the Acetabularia-CPE for Pb(II) standard with concentrations of (a) 1, (b) 10, (c) 20, and (d) 50 ppm. The applied conditions were deposition potential of −800 mV and scan rate of 75 mV/s in 0.1 M KNO₃ electrolyte.