Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine
In this research, a glassy carbon electrode modified with single-wall carbon nanotubes for electrochemical determination of dopamine was studied by cyclicvoltammetry (CV) and differential pulse voltammetry (DPV). The oxidation and reduction potentials of dopamine using voltammetric technique were me...
Saved in:
Main Authors: | , , , |
---|---|
Format: | Conference Proceeding |
Published: |
2018
|
Subjects: | |
Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649268608&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50791 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-50791 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-507912018-09-04T04:45:39Z Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine Sopis Chuekachang Viruntachar Kruefu Suwan Chaiyasit Sukon Phanichphant Engineering In this research, a glassy carbon electrode modified with single-wall carbon nanotubes for electrochemical determination of dopamine was studied by cyclicvoltammetry (CV) and differential pulse voltammetry (DPV). The oxidation and reduction potentials of dopamine using voltammetric technique were measured. The SWCNTs/GC 10 μL was used to test the linearity of anodic oxidation of dopamine by DPV. The peak current increased linearly with concentration of dopamine in the range of 2.5-25 ppm (R2=0.9766).For the life time of the SWCNTs/GC, the cut-off criterion of the DPV was detected in the reduction of current by 50 %. The lifetime of the SWCNTsmodified depended on the oxidation of dopamine because of fouling of the electrode surface due to the adsorption of oxidation products. 34 repetition cycles was obtained. The detection limit of the dopamine as obtained from the oxidation current in DPV was 0.021 ppm (S/N=3) with minimum current for the detection of dopamine of 0.033 μA. The reproducibility of electrocatalytical studies was better within 90% (10% RSD). The relative standard deviation (RSD) of 8.42% for 100 ppm dopamine (n=20) showed excellent reproducibility. Drug samples obtained from Radvitee hospital were tested as the mentioned procedure. The percentage recovery of dopamine in drug samples was 120. ©2010 IEEE. 2018-09-04T04:45:39Z 2018-09-04T04:45:39Z 2010-11-29 Conference Proceeding 2-s2.0-78649268608 10.1109/NEMS.2010.5592167 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649268608&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50791 |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
topic |
Engineering |
spellingShingle |
Engineering Sopis Chuekachang Viruntachar Kruefu Suwan Chaiyasit Sukon Phanichphant Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
description |
In this research, a glassy carbon electrode modified with single-wall carbon nanotubes for electrochemical determination of dopamine was studied by cyclicvoltammetry (CV) and differential pulse voltammetry (DPV). The oxidation and reduction potentials of dopamine using voltammetric technique were measured. The SWCNTs/GC 10 μL was used to test the linearity of anodic oxidation of dopamine by DPV. The peak current increased linearly with concentration of dopamine in the range of 2.5-25 ppm (R2=0.9766).For the life time of the SWCNTs/GC, the cut-off criterion of the DPV was detected in the reduction of current by 50 %. The lifetime of the SWCNTsmodified depended on the oxidation of dopamine because of fouling of the electrode surface due to the adsorption of oxidation products. 34 repetition cycles was obtained. The detection limit of the dopamine as obtained from the oxidation current in DPV was 0.021 ppm (S/N=3) with minimum current for the detection of dopamine of 0.033 μA. The reproducibility of electrocatalytical studies was better within 90% (10% RSD). The relative standard deviation (RSD) of 8.42% for 100 ppm dopamine (n=20) showed excellent reproducibility. Drug samples obtained from Radvitee hospital were tested as the mentioned procedure. The percentage recovery of dopamine in drug samples was 120. ©2010 IEEE. |
format |
Conference Proceeding |
author |
Sopis Chuekachang Viruntachar Kruefu Suwan Chaiyasit Sukon Phanichphant |
author_facet |
Sopis Chuekachang Viruntachar Kruefu Suwan Chaiyasit Sukon Phanichphant |
author_sort |
Sopis Chuekachang |
title |
Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
title_short |
Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
title_full |
Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
title_fullStr |
Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
title_full_unstemmed |
Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
title_sort |
single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine |
publishDate |
2018 |
url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649268608&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50791 |
_version_ |
1681423653446615040 |