Differential Electroanalysis of Dopamine in the Presence of a Large Excess of Ascorbic Acid at a Nickel Oxide Nanoparticle-Modified Glassy Carbon Electrode

<div>(a) SWVs obtained from the GC<sub>ox</sub>/nano-NiO<i><sub>x</sub></i> electrode in PBs (pH 6.0) containing different concentrations of AA (0.5, 1, 1.5, 2, 2.5, 3, and 3.5 mM) and DA (1.5, 3, 4.5, 6, 7.5, 9 and 10.5 <i>μ</i>M). Square wave amplitude: 25 mV; frequency: 25 Hz; step potential: 2 mV. The electrode potential was scanned from −0.5 V to 0.5 V. Panels (b) and (c) are the calibration plots for DA and AA, respectively.</div>

Journal of Sensors

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Figure 12

Figure 12: Differential Electroanalysis of Dopamine in the Presence of a Large Excess of Ascorbic Acid at a Nickel Oxide Nanoparticle-Modified Glassy Carbon Electrode 

Figure 12 | Differential Electroanalysis of Dopamine in the Presence of a Large Excess of Ascorbic Acid at a Nickel Oxide Nanoparticle-Modified Glassy Carbon Electrode 