Highly Sensitive Electrochemical Sensor for the Determination of 8-Hydroxy-2′-deoxyguanosine Incorporating SWCNTs-Nafion Composite Film

Figure 1

Cyclic voltammograms on different electrodes in 0.1 M PBS (pH 7.4) containing 5 μM 8-OHdG. (A) Bare GCE, (B) MWCNTs/GCE, and (C) SWCNTs/GCE. Cyclic voltammetric measurements were performed at a scan rate of 50 mV/s after the electrode was immersed in the tested solution under the condition of 5.0 min accumulation (unstirring).