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Chemical and Biochemical Engineering Quarterly, Vol. 23 No. 1, 2009.

Original scientific paper

A Simple But Highly Selective Electrochemical Sensor for Dopamine

R. Doyle ; Department of Chemistry, NUI Maynooth, Maynooth, Co. Kildare, Ireland
C. B. Breslin ; Department of Chemistry, NUI Maynooth, Maynooth, Co. Kildare, Ireland
A. D. Rooney ; Department of Chemistry, NUI Maynooth, Maynooth, Co. Kildare, Ireland

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Abstract

A modified platinum electrode was fabricated by the electropolymerization of pyrrole using a sodium p-sulphonatocalix[6]arene as the supporting electrolyte. The
modified electrode acts as a reasonably sensitive electrochemical sensor for dopamine giving a linear calibration curve in the range 0.075 – 1.00 mM dopamine. The sensor shows no ability to sense the common interferent ascorbic acid, therefore the concentration
for dopamine can be directly sensed in a large excess of ascorbic acid with no need to make adjustments for the signal for ascorbic acid. Investigations are included to study the mode of sensing of the modified electrode.

Keywords

Modified electrode; dopamine sensor; sulphonated calixarene

Hrčak ID:

34612

URI

https://hrcak.srce.hr/34612

Publication date:

27.3.2009.

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