The Study of a New Method to Determine Copper Ion by Square-Wave Voltammetry-Extraction Iodometry at the Liquid/Liquid Interfaces

Figure 5

(a) Square-wave voltammograms of various iodine concentrations in MIBK: amplitude 0.15 V and frequency 10 Hz, (b) the peak current versus concentration of copper ion in solution; the Cu²⁺ concentration (in mol/L): 0.01, 0.0025, 0.002, 0.0015, 0.001, 0.0005.

(a)

(b)