Fig. 7
From: Nanocarbon and nanodiamond for high performance phenolics sensing

Detection of HQ and catechol with single-use nanocarbon electrode. Square-wave voltammograms in 0.1 M phosphate buffer and increasing concentrations of catechol (a) and increasing concentrations of HQ (b). Each cycle has been performed at a freshly prepared nanocarbon-GCE. Inset plots show the peak current against concentration of each species