Square wave voltammetric determination of Dexamethasone on a multiwalled carbon nanotube modified pencil electrode

Authors: B Rezaei, SZ Zare, Ali A Ensafi

Publication date: 2011/5

Journal name: Journal of the Brazilian Chemical Society

Volume:22

Pages:897-904

Publisher: Brazilian Chemical Society

ABSTRACT The electrochemical behavior of dexamethasone, a steroid hormone, was
studied on a multiwalled carbon nanotube (MWCNTs) modified pencil electrode (PE) by
square wave voltammety and electrochemical impedance spectroscopy (EIS).
Dexamethasone showed one oxidation peak potential around+ 0.80 V on the surface of the
modified electrode. Under optimized conditions, the oxidation peak current depended on the
dexamethasone concentration and was linear in the range of 0.15-100 µmol L-1 ...