伏安极谱法测定氢氧化钠中的锌镉铅铜铁镍钴

Zinc, cadmium, lead and copper:
Electrolyte: Acetate buffer, pH = 4.6 with CH3COOH, NH3 and HCl.
AE: Pt
RE: Ag/AgCl/KCl 3M
Parameters: Zn at the SMDE, Ustart = -800 mV, Uend = -1200 mV
Cd, Pb and Cu at the HMDE, DPASV (+50 mV)
Umeas = -700 mV (90s), Ustart = -700 mV, Uend = +30 mV
Ep (Zn) = -960 mV, Ep (Cd) = -600 mV
Ep (Pb) = -380 mV, Ep (Cu) = -120 mV