Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid
A stable electroactive thin film of poly(caffeic acid) has been deposited on thesurface of a glassy carbon electrode by potentiostatic technique in an aqueous solutioncontaining caffeic acid. The voltammetric behavior of epinephrine (EP) at the poly(caffeicacid) modified glassy carbon electrode was...
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2006-02-01
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Online Access: | http://www.mdpi.com/1424-8220/6/2/80/ |
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doaj-3fc930bbbfcf4e9b87980540a938e1482020-11-25T00:40:39ZengMDPI AGSensors1424-82202006-02-0162808910.3390/s6020080Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic AcidNian Bing LiHong Qun LuoWang RenA stable electroactive thin film of poly(caffeic acid) has been deposited on thesurface of a glassy carbon electrode by potentiostatic technique in an aqueous solutioncontaining caffeic acid. The voltammetric behavior of epinephrine (EP) at the poly(caffeicacid) modified glassy carbon electrode was studied by cyclic voltammetry. The poly(caffeicacid) modified electrode exhibited a promotion effect on the oxidation of EP. In a pH 7.4phosphate buffer, the anodic current increased linearly with the concentration of EP in therange from 2.0 × 10−6 to 3.0 × 10−4 mol L−1 and the detection limit for EP was 6.0 × 10−7mol L−1. The proposed method can be applied to the determination of EP in practicalinjection samples with simplicity, rapidness and accurate results.http://www.mdpi.com/1424-8220/6/2/80/Caffeic acidElectrodeposited filmsEpinephrineChemically modified electrode |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nian Bing Li Hong Qun Luo Wang Ren |
spellingShingle |
Nian Bing Li Hong Qun Luo Wang Ren Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid Sensors Caffeic acid Electrodeposited films Epinephrine Chemically modified electrode |
author_facet |
Nian Bing Li Hong Qun Luo Wang Ren |
author_sort |
Nian Bing Li |
title |
Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid |
title_short |
Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid |
title_full |
Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid |
title_fullStr |
Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid |
title_full_unstemmed |
Electrochemical Behavior of Epinephrine at a Glassy Carbon Electrode Modified by Electrodeposited Films of Caffeic Acid |
title_sort |
electrochemical behavior of epinephrine at a glassy carbon electrode modified by electrodeposited films of caffeic acid |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2006-02-01 |
description |
A stable electroactive thin film of poly(caffeic acid) has been deposited on thesurface of a glassy carbon electrode by potentiostatic technique in an aqueous solutioncontaining caffeic acid. The voltammetric behavior of epinephrine (EP) at the poly(caffeicacid) modified glassy carbon electrode was studied by cyclic voltammetry. The poly(caffeicacid) modified electrode exhibited a promotion effect on the oxidation of EP. In a pH 7.4phosphate buffer, the anodic current increased linearly with the concentration of EP in therange from 2.0 × 10−6 to 3.0 × 10−4 mol L−1 and the detection limit for EP was 6.0 × 10−7mol L−1. The proposed method can be applied to the determination of EP in practicalinjection samples with simplicity, rapidness and accurate results. |
topic |
Caffeic acid Electrodeposited films Epinephrine Chemically modified electrode |
url |
http://www.mdpi.com/1424-8220/6/2/80/ |
work_keys_str_mv |
AT nianbingli electrochemicalbehaviorofepinephrineataglassycarbonelectrodemodifiedbyelectrodepositedfilmsofcaffeicacid AT hongqunluo electrochemicalbehaviorofepinephrineataglassycarbonelectrodemodifiedbyelectrodepositedfilmsofcaffeicacid AT wangren electrochemicalbehaviorofepinephrineataglassycarbonelectrodemodifiedbyelectrodepositedfilmsofcaffeicacid |
_version_ |
1725288831336316928 |