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

Figure 1

Schematic diagrams of the electrochemical cell (1) WE (Pt wire), (2) RE(SCE), (3) CE(Pt), (4) 0.1 mm Pt wire, (5) L/L interface, (6) aqueous solution, (7) pipette, (8) organic phase, and (9) Lid.