Figure 4From: Application of a modified graphene nanosheet paste electrode for voltammetric determination of methyldopa in urine and pharmaceutical formulationLSV (at 2 mV s−1) of a 2,7-BFGPE in 0.1 M PBS (pH 7.0) containing 20.0 μM methyldopa. The points are the data used in the Tafel plot. The inset shows the Tafel plot derived from the LSV.Back to article page