Carboxyl functionalized graphene oxide based electrochemical sensor
for detection of dopamine in presence of ascorbic acid, uric acid and
synthetic cerebrospinal fluid

Bordoloi, Priyakshi ; Das, Diganta Kumar

Abstract

Dopamine is an important neurotransmitter and plays a vital role in the proper functioning of human metabolism. Therefore, fabrication of a sensitive sensor for the detection of dopamine is crucial. The work reports detection of dopamine in presence of interfering ascorbic acid, uric acid, Na+, K+, Ca2+, urea and glucose. The linear range for the detection of dopamine is observed from 1.07×10-4 M to 2.19×10-4 M in presence of 1.00×10-3 M ascorbic acid and 1.00×10-3 M uric acid. The detection limit is estimated to be 1.46×10-8 M.


Keyword(s)

Ascorbic acid, Cyclic Voltammetry, Dopamine, Electrochemical Impedance Spectroscopy, Cerebrospinal Fluid, Uric acid


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