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. 2018 Apr 29;11(5):702. doi: 10.3390/ma11050702

Figure 8.

Figure 8

(A) DPV response of the 10 wt % poly(BPE)/g-C3N4 composite-modified GCE at 0, 0.4, 0.8, 1.2, 1.6, and 2 μM Cd2+ in the presence of 2.0 μM Pb2+ in 0.1 M NaAc–HAc (pH = 4.5), showing the effect of the concentration of Cd2+ on the peak currents of 2.0 μM Pb2+. (B) DPV response of the 10 wt % poly(BPE)/g-C3N4 composite-modified GCE at 0, 0.4, 0.8, 1.2, 1.6, and 2 μM Pb2+ in the presence of 2.0 μM Cd2+ in 0.1 M NaAc–HAc (pH = 4.5), showing the effect of the concentration of Pb2+ on the peak current of 2.0 μM Cd2+.