Zhou, L, Shang, FJ, Pravda, M, Glennon, JD, Luong, JHT;

2009

March

Electroanalysis

Selective Detection of Dopamine Using Glassy Carbon Electrode Modified By A Combined Electropolymerized Permselective Film of Polytyramine and Polypyrrole-1-Propionic Acid

Validated

()

21

7

797

803

A sensitive and selective electrochemical method for the determination of dopamine using a combined electropolymerized permselective film of polytyramine and polypyrrole-l-propionic acid oil a glassy carbon (GC) electrode was developed. The formation of a "layer-by-layer" film has allowed for selective detection of dopamine in the presence of 3,4-dihydroxyphenylalanine (L-DOPA), DOPAC, ascorbic acid, uric acid, epinephrine and norepinephrine. The modified electrodes exhibited a detection limit of 100 nM with linearity ranging from 5 x 10(-6) to 5 x 10(-5) M. No cleaning step was required during the course of repeated measurement..

DOI 10.1002/elan.200804504