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. 2022 Feb 16;10:833899. doi: 10.3389/fchem.2022.833899

FIGURE 4.

FIGURE 4

Histograms showing the oxidation current difference before and after rebinding BPA (ΔIox) obtained from differential pulse voltammetries (DPVs) of LSG-MIP for (A) rebinding time optimization after binding 1 µM BPA of different rebinding times, (B) removal time optimization using 20-min rebinding time for 1 µM BPA, (C) template concentration optimization using 15 min of removal time and 20 min of rebinding time for 1 µM BPA. Cyclic voltammetries (CVs) of (D) LSG-MIP and (E) LSG-NIP in a solution of 5 mM [Fe(CN)6]3−/4− with 0.1 M KCl (scan rate: 100 mV/s) performed by Palmsens showing the oxidation response of bare LSG, LSG/AuNP, before and after rebinding of 1 µM BPA. DPVs of (D) LSG-MIP and (E) LSG-NIP in a solution of 5 mM [Fe(CN)6]3−/4− with 0.1 M KCl performed by KAUSTat showing the oxidation response of bare LSG, AuNPs/LSG, before and after rebinding of 1 µM BPA.