Author/Authors :
Raoof ، Jahan Bakhsh نويسنده Electroanalytical Chemistry Research Laboratory, Department of Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran , , KIANI، ABOLFAZL نويسنده , , Ojani، Reza نويسنده , , Valiollahi، Roudabeh نويسنده Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran ,
Abstract :
A carbon paste electrode (CPE) modified by multiwalled carbon nanotubes
(MWCNTs) and banana tissue was used for detection of dopamine (DA). The modified
electrode show good selectivity toward DA in the presence of ascorbic acid (AA). The
electrochemical determination of DA at the surface of modified electrode was investigated by
differential pulse voltammetry (DPV). The linear curve was obtained in the range of 10-30
?M. The detection limit (3?) was 2.09 ?M for DA. Also the stability of modified electrode
was investigated after 20 days, and results show that the modified has relatively good
stability.
