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. 2024 Aug 16;14:18961. doi: 10.1038/s41598-024-69869-4

Figure 6.

Figure 6

(a) DPV response for CuO-ZIF-8/GCE (at 0.025 Vs–1) in a 0.2 mol L–1 PBS (pH 6.0) containing various concentration of 0.25, 0.5, 0.75, 1.25, 1.5, 2.5, 3, 4, 10, 15, 20, 25, 45 and 60 ppm of free-Cl. (b) calibration curves obtained for peak current vs. free-Cl concentration.