Voltammetric determination of dopamine using modified glassy carbon electrode by electrografting of catechol

Author:

Pourghobadi Zeinab1,Neamatollahi Davood2

Affiliation:

1. Islamic Azad University, Khorramabad Branch, Department of Chemistry, Khorramabad, Iran

2. Bu-Ali Sina University, Faculty of Science, Department of Chemistry, Hamadan, Iran

Abstract

By means of cyclic voltammetry as a diagnostic technique, the present study tried to describe the behaviour of dopamine (DP) at the bare and catechol electrografted glassy carbon electrode (CA/GCE). The results indicated that the CA/GCE exhibits high electrocatalytic activity toward DP. The DP cycling of the CA/GCE in DP showed two linear calibration ranges between 5.0?100 and 100?750 ?M with a detection limit of 0.86 ?M. For 6 DP replicate measurements (50 ?M); the relative standard deviation (RSD) was 2.7 %. This method was successfully used for the determination of DP in serum samples.

Publisher

National Library of Serbia

Subject

General Chemistry

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