Fig. 13From: Nanomaterial-based environmental sensing platforms using state-of-the-art electroanalytical strategiesAn idealized Randles electrical equivalent circuit for an electrochemical reaction. Cd, double-layer capacitor; Rp, polarization resistance; Rs, solution resistance; ZW, Warburg impedance. (Reprinted with permission from Reference Bansod et al. 2017). © 2017 ElsevierBack to article page