Differential Electroanalysis of Dopamine in the Presence of a Large Excess of Ascorbic Acid at a Nickel Oxide Nanoparticle-Modified Glassy Carbon Electrode

Table 4

Electroanalytical determination of AA and DA in real samples with comparison to the UV-Vis approach.

Sample		Proposed method^a (mM)	Proposed method^a (mM)	Recovery^b (%)	UV-visible method (mM)
Vitamin C	AA	—		—
	AA	1.50		100	—
	AA	3	4.29 ± 0.12	98	—
DA-HCL	DA	—		—
	DA	0.75		106	—
	DA	1.25		97	—

^aAverage of seven determinations; ^b ().