Electrochemically Degraded Dopamine Film for the Determination of Dopamine
22 Citations•2006•
H. Chang, D. I. Kim, Y. Park
Electroanalysis
No TL;DR found
Abstract
A dopamine (DA) polymer was deposited electrochemically on to a glassy carbon (GC) surface until the electrode surface was passivated. The DA film on the GC surface was re-formed for high sensitivity and reproducibility by electrochemical degradation. The re-formed electrode was sensitive and selective in the determination of DA in the presence of ascorbic acid. The linear range obtained by square-wave voltammetry was between 0.1 and 2.1 μM (R=0.996, n=6) with a sensitivity of 1.2 μA μM−1 and a detection limit (S/N=3) of 0.04 μM. The electropolymerized DA film was stable and the re-formed electrode was reproducible for DA determination.