Research Article

Simultaneous Determination of Uric Acid and Xanthine Using a Poly(Methylene Blue) and Electrochemically Reduced Graphene Oxide Composite Film Modified Electrode

Figure 7

CVs for UA (a) and Xa (b) at different scan rate in PBS (pH 3.0). Insets show the calibration plots of lgI-lgv and E-lnv. From a to m: 0.04, 0.06, 0.08, 0.10, 0.12, 0.14, 0.16, 0.18, 0.20, 0.22, 0.24, 0.26, 0.28.
(a)
(b)