A Novel Carbon Paste Electrode Modified with N¹-Hydroxy-N¹,N²-Diphenylbenzamidine for the Electrochemical Determination of Cadmium(II) in Environmental Samples

Figure 14

SWASVs of various concentrations (bottom to top: 0.3, 3, 7, 10, 20, 30, 40, 50, 70, 80, and 100 nM) of Cd(II). Inset: calibration plot of peak currents versus Cd(II) concentrations. Buffer: Britton Robinson (B-R) (0.1 M, pH 4); accumulation potential: −1.0 V; accumulation time: 270 s; frequency: 80 Hz; pulse amplitude: 100 mV; and step potential: 6 mV.