Fig. 3From: Voltammetric approach for pharmaceutical samples analysis; simultaneous quantitative determination of resorcinol and hydroquinoneA Cyclic voltammetric curves of 500 µM RC in PBS (0.1 M) pH 6 on the surface of (a) ZnFe2O4/NPs/IL/CPE, (b) IL/CPE, (c) ZnFe2O4 /NPs /CPE and (d) CPE at scan rate of 100 mV. s− 1. B The current densities derived from cyclic voltammetric curves at the same electrodesBack to article page