Research Article
Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode
Figure 5
DP voltammograms of MIP/GCE sensor for different ETP concentrations: (1) 5.0×10−7 M; (2) 6.0×10−7 M; (3) 7.0 ×10−7 M; (4) 8.0×10−7 M; (5) 1.0× 10−6 M; (6) 2.0×10−6 M; (7) 3.0×10−6 M; (8) 4.0×10−6 M; (9) 6.0×10−6 M; (10) 8.0×10−6 M; (11) 1.0×10−5 M. Experimental conditions: scan rate: 10 mVs−1; pulse amplitude: 50 mV; and pulse width: 20ms. The inset shows the calibration curve. Error bars represent the standard deviation of three independent measurements.