Electroanalytical Characterisation of Dopa Decarboxylase Inhibitors Carbidopa and Benserazide on Multiwalled Carbon Nanotube and Poly(Nile blue A) Modified Glassy Carbon Electrodes

Table 1

Data from the calibration plots for the analytical characterisation of CD and BS in 0.1 M PBS, pH 5.0 by DPV at the MWCNTs/PNB-modified electrode.

	Carbidopa	Benserazide
Peak potential (mV versus SCE)	210	160
Linearity range (μM)	10–100	4–40
Slope (μA μM^−1)	0.43 ± 0.001	0.15 ± 0.001
Intercept (μA)	0.49 ± 0.07	−0.32 ± 0.02
Correlation coefficient	0.997	0.999
LOD (μM)	1.17	0.50
LOQ (μM)	3.56	1.53
Repeatability of peak potential (RSD%)	0.50	0.56
Repeatability of peak current (RSD%)	0.96	0.44