Voltammetric Determination of Ascorbic Acid Content in Cabbage Using Anthraquinone Modified Carbon Paste Electrode

Figure 2

(a) Cyclic voltammograms of AQMCPE in PBS of various pHs (A–E: 3.0, 4.0, 5.0, 6.0, and 7.0, respectively) containing 2.0 mM AA. (b) Plot of (A) anodic peak current and (B) anodic peak potential vs. pH.

(a)

(b)