Fig. 7From: Voltammetric approach for pharmaceutical samples analysis; simultaneous quantitative determination of resorcinol and hydroquinoneA Exponential single potential-step chronoamperometic curves of 300 (a), 500 (b) and 700 (c) µM RC in PBS (0.1 M) pH 6. B Cottrell’s plot of oxidation peak current vs. the minus square roots of time for 300 (a), 500 (b) and 700 (c) µM RC in PBS (0.1 M) pH 6Back to article page