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. 2020 Jul 16;20(14):3956. doi: 10.3390/s20143956

Figure 4.

Figure 4

Characterization and analytical performance of the electrochemical sensor. Typical CV studies of the SPE, PEI-rGO (6 μL, 0.5 mg/mL), PEI-rGO-AuNCs (6 μL, 0.5 mg/mL), and PEI-rGO-AuNCs–antibody (3 μL, 100 μg/mL)-modified electrode in 5.0 mM K3 (Fe(CN)6), 1.0 mM K4Fe(CN)6, and 0.1 mM KCl.