Figure 7. Amperometric i-t response of RGO@PDA composite modified RDE in the presence of different additions (0.003 to 1117.6 μM) of CPZ into constantly stirred N2 saturated PBS.
Working potential = 0.8 V. Inset (upper) shows the enlarged amperometric response of RGO@PDA composite for the addition of 0.03 μM (a), 0.3 μM (b), 1 μM (c), 5 μM (d), 10 μM (e), 50 μM (f) and 100 μM (g) of CPZ into PBS. Inset (lower) shows the calibration plot for amperometric current response of vs. [CPZ].