Fig. 7From: Fabrication of an electrochemical sensor based on eggshell waste recycling for the voltammetric simultaneous detection of the antibiotics ofloxacin and ciprofloxacinA, B DPVs of individual detection of OFL (A) and CIP (B) at Ca2CuO3 NS/CPE in PBS (pH = 4). The inset in A and B: the corresponding calibration curve of OFL and CIP with different concentrations, respectivelyBack to article page