Modified Carbon Nanotube Paste Electrode for Voltammetric Determination of Carbidopa, Folic Acid, and Tryptophan

Figure 1

CVs of (a) unmodified CPE in 0.1 M PBS (pH 5.0), (b) unmodified CPE in 0.3 mM CD, (c) FCDCNPE in 0.1 M PBS, (d) CNPE in 0.3 mM CD, (e) FCDCPE in 0.3 mM CD, and (f) FCDCNPE in 0.3 mM CD. In all cases the scan rate was 20 mV s⁻¹.