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Sensors 2003, 3(3), 61-68; doi:10.3390/s30300061

Voltametric Behavior of Noradrenaline at 2-Mercaptoethanol Self-Assembled Monolayer Modified Gold Electrode and its Analytical Application

Faculty of Chemistry and Material Science, Hubei University, Wuhan 430062, China
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Received: 14 January 2003 / Accepted: 12 February 2003 / Published: 21 February 2003
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Abstract

2-Mercaptoethanol self-assembled monolayer (ME/Au SAMs) was prepared on a gold electrode. The ME/Au SAMs was characterized by using ATR-FTIR and dynamic contact angle measurements. The electrochemical behaviors of noradrenaline (NE) on the ME/Au SAMs were studied in BR buffer solution. The modified electrode accelerated electron transfer rate of the redox of NE and showed an excellent eletrocatalytic activity. The diffusion coefficient (D) of NE was obtained to be 4.3×10-8 cm2 s-1. The catalytic current increased linearly with the concentration of NE in the range of 2.0×10-6 -1.0×10-3 M by square wave voltammetry response. The modified electrode could eliminate the interference of ascorbic acid (AA) at 40-fold concentration of NE and could be satisfactorily used for the determination of NE in the drug injection. View Full-Text
Keywords: 2-mercaptoethanol (ME); Self-assembled monolayers (SAMs); Square wave voltammetry (SWV); Noradrenaline (NE) 2-mercaptoethanol (ME); Self-assembled monolayers (SAMs); Square wave voltammetry (SWV); Noradrenaline (NE)
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MDPI and ACS Style

Zhang, X.; Wang, S. Voltametric Behavior of Noradrenaline at 2-Mercaptoethanol Self-Assembled Monolayer Modified Gold Electrode and its Analytical Application. Sensors 2003, 3, 61-68.

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