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

Figure 9

SWVs of extracts of cabbage sample from (a) Guld, (b) Karshewa, and (c) Birbira in pH 4.0 PBS at 30 mV amplitude, 7 mV step potential, and 35 Hz frequency. Inset: plot of anodic peak current vs. sample area.