M. Somasundrum et Jv. Bannister, AMPEROMETRIC DETERMINATION OF COPPER USING SCREEN-PRINTED ELECTRODES, Sensors and actuators. B, Chemical, 15(1-3), 1993, pp. 203-208
An amperometric method for the determination of copper ions has been d
eveloped using disposable, screen-printed electrodes modified with the
ligand bis-cyclohexanone oxaldihydrazone. The electrodes operate at 250 mV versus SCE, giving a linear response to copper across the range
0.03-0.3 mM (r = 0.983, n = 13). The effect on the electrode response
of variations in pH, temperature, ligand concentration and storage ti
me are outlined; as well as the effect of competing cations including
magnesium, barium, ammonium, calcium, cobalt, iron(III), nickel and zi
nc.