Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
Highly Selective Response of Dopamine Against its Metabolite and Interfering Molecules at Sputtered ITO Electrode Surface
Osamu NIWAGuobao XUYuzuru IWASAKI
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JOURNALS OPEN ACCESS

2006 Volume 74 Issue 2 Pages 135-137

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Abstract

The highly selective detection of dopamine (DA) against 3,4-dihydroxyphenylacetic acid (DOPAC), L-ascorbic acid (AA), and uric acid (UA) was studied using a sputter deposited indium tin oxide electrode. The sensitivity of the electrode surface was more than 100 times higher for DA than for DOPAC, AA and UA as revealed by voltammograms obtained in a phosphate buffer. The DA response is linear from 10−6 to 10−3 M in the presence of 0.1 mM AA, suggesting that high selectivity is achieved in the mixed solution.

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© 2006 The Electrochemical Society of Japan
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