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

Figure 6

SWVs of AQMCPE in pH 4 PBS containing 2 mM AA at different step potentials (a–h: 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, and 10 mV, respectively). Inset: plot of anodic peak current vs. step potential.