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


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


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Faculty of Chemistry and Material Science, Hubei University, Wuhan 430062, China





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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





Autor: XiuHua Zhang and ShengFu Wang *

Fuente: http://mdpi.com/



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