Figure 13

(a) Differential pulse voltammograms (DPVs) of SPCE-AuND in various concentrations of AA (50 mM PB pH 5). (b) The calibration plot of AA concentration against the oxidation (anodic) peak current value of AA from the DPVs.

(a) Differential pulse voltammograms (DPVs) of SPCE-AuND in various concentrations of AA (50 mM PB pH 5). (b) The calibration plot of AA concentration against the oxidation (anodic) peak current value of AA from the DPVs.