Adsorptive stripping voltammetry determination of methyldopa on the surface of a carboxylated multiwall carbon nanotubes modified glassy carbon electrode in biological and pharmaceutical samples

Authors: Behzad Rezaei, Neda Askarpour, Ali A Ensafi

Publication date: 2013/4/16

Journal name: Colloids and Surfaces B: Biointerfaces

Publisher: Elsevier

In the present work, a simple carboxylated multiwall carbon nanotubes (CMWCNTs)
modified glassy carbon electrode was developed for sensitive determination of methyldopa
(MTD). The study of modified electrode and MTD electrochemical behavior at its surface was
investigated employing SEM, adsorptive stripping voltammetry, electrochemical impedance
spectroscopy and chronocoulometry. These studies show that the oxidation of MTD is
facilitated at the surface of GCE which is casted with CMWCNTs and remarkably peak ...