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

Figure 2

Effect of various preconcentration Pb(II) standards for the Acetabularia-CPE showing the (a) full range from 0.4 ppm to 50 ppm and (b) linear increase from 0.4 ppm to 5 ppm, under the conditions of one minute accumulation, followed by a deposition potential of −800 mV and a scan rate of 75 mV/s in 0.1 M KNO₃ electrolyte.