627854.fig.006a
(a)
627854.fig.006b
(b)
Figure 6: (a) Square wave voltammograms of GCE in 2-thiouracil solution at different concentrations at (a) 1, (b) 3, (c) 5, (d) 7, (e) 9, (f) 10, (g) 15, and (h) 20 μM and (b) plot of the peak current against concentration of 2-thiouracil.