Sensors 2013, 13(10), 14029-14040; doi:10.3390/s131014029
Article

Simultaneous Determination of Dopamine, Serotonin and Ascorbic Acid at a Glassy Carbon Electrode Modified with Carbon-Spheres

Received: 7 September 2013; in revised form: 6 October 2013 / Accepted: 12 October 2013 / Published: 16 October 2013
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A novel glassy carbon electrode (GCE) modified with carbon-spheres has been fabricated through a simple casting procedure. The modified GCE displays high selectivity and excellent electrochemical catalytic activities towards dopamine (DA), serotonin (5-HT), and ascorbic acid (AA). In the co-existence system, the peak separations between AA and DA, DA and 5-HT, and AA and 5-HT are large up to 230, 180, and 410 mV, respectively. Differential pulse voltammetry (DPV) has been employed to simultaneously detect DA, 5-HT, and AA, and the linear calibration curves for DA, 5-HT, and AA are obtained in the range of 20.0–150.0 μM, 40.0–750.0 μM and 300.0–2,000.0 μM with detection limits (S/N = 3) of 2.0 μM, 0.7 μM and 0.6 μM, respectively. The proposed electrode has been applied to detect DA, 5-HT, and AA in real samples using standard addition method with satisfactory results.
Keywords: carbon-spheres; simultaneous determination; dopamine; ascorbic acid; serotonin
PDF Full-text Download PDF Full-Text [727 KB, Updated Version, uploaded 21 June 2014 09:43 CEST]
The original version is still available [558 KB, uploaded 21 June 2014 09:43 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Zhou, J.; Sheng, M.; Jiang, X.; Wu, G.; Gao, F. Simultaneous Determination of Dopamine, Serotonin and Ascorbic Acid at a Glassy Carbon Electrode Modified with Carbon-Spheres. Sensors 2013, 13, 14029-14040.

AMA Style

Zhou J, Sheng M, Jiang X, Wu G, Gao F. Simultaneous Determination of Dopamine, Serotonin and Ascorbic Acid at a Glassy Carbon Electrode Modified with Carbon-Spheres. Sensors. 2013; 13(10):14029-14040.

Chicago/Turabian Style

Zhou, Jianqing; Sheng, Meili; Jiang, Xueyue; Wu, Guozhi; Gao, Feng. 2013. "Simultaneous Determination of Dopamine, Serotonin and Ascorbic Acid at a Glassy Carbon Electrode Modified with Carbon-Spheres." Sensors 13, no. 10: 14029-14040.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert