The redox responses of a carbon nanotube paste electrode modified with vinylferrocene was investigated. The mediated oxidation of norepinephrine at the surface of modified electrode was investigated by cyclic voltammetry (CV). Square wave voltammetry (SWV) of norepinephrine at the modified electrode exhibited two linear dynamic ranges with a detection limit of 4.0 × 10−8 M. The diffusion coefficient (D = 1.06 × 10−6 cm2 s−1) and the kinetic parameters such as the electron transfer coefficient (α = 0.38) for norepinephrine were determined using electrochemical approaches. SWV was used for simultaneous determination of norepinephrine and tryptophan at the modified electrode, and quantification of norepinephrine and tryptophan in some real samples by the standard addition method.
Research on Chemical Intermediates – Springer Journals
Published: Jun 10, 2014
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