Research Article

Reduced Graphene Oxide/Gold Nanoparticles Modified Screen-Printed Electrode for the Determination of Palmitic Acid

Figure 5

Nyquist plots of bare SPCE, GO, rGO, and rGO/AuNP-modified SPCE in 0.1 M KCl solution containing 5.0 mM [Fe (CN)6]3−/4− with frequency 100 kHz and amplitude 0.01 V.