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

Figure 7

Nitrogen adsorption/desorption of (a) rGO, (b) CoFe₂O₄, and (c) CoFe₂O₄/rGO.