Simultaneous Voltammetric Determination of Uric Acid, Xanthine, and Hypoxanthine Using CoFe₂O₄/Reduced Graphene Oxide-Modified Electrode

Table 2

Mean values of , RSD, and RSD_H.

	(M)	,average (μA)	SD	RSD (%)	(%)
EPX 1		1.968	0.04	2.17	5.66
		0.918	0.02	2.04	5.66
		0.381	0.01	2.33	5.66
EPX 2		3.299	0.05	1.49	4.44
		2.788	0.03	1.18	4.44
		1.338	0.01	1.05	4.44
EPX 3		2.604	0.06	2.29	4.00
		3.423	0.04	1.11	4.00
		1.718	0.03	1.50	4.00

SD: standard deviation; RSD: relative standard deviation. B–RBS ; .