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

Figure 8

SWVs of AQMCPE in pH 4 PBS containing various concentrations of AA (a–h: 0.05, 0.1, 0.2, 0.5, 1.0, 1.5, 2.0, and 4.0 mM, respectively). Experimental conditions: frequency 35 Hz, amplitude 30 mV, step potential 7 mV. Inset: plot of oxidative peak current vs. concentration of AA.