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A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles
Joint Authors
Ansari, Somayeh
Farahbakhsh, Anahita
Riahi, Fariborz
Bagherzadeh, Mojtaba
Source
International Journal of Electrochemistry
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-30
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Herein, Fe3O4 magnetic nanoparticles (MNPs) were synthesized and characterized.
Afterward, a magnetic carbon paste electrode (MCPE) was modified with MNPs via casting and drying MNPs on top of the MCPE (MCPE/MNP).
Electrochemical behavior of the MCPE/MNP was studied by cyclic voltammetry in the presence of [Fe(CN)6]3−/4− as a redox probe, and surface pKa of MNPs was evaluated as 6.3±0.1.
The behavior of MCPE/MNP towards dopamine (DA) and ascorbic acid (AA) has been investigated by electrochemical methods, and the obtained results showed that the MCPE/MNP has adsorption behavior towards only DA.
Based on this behavior, the DA molecules were pre-concentrated on top of the MCPE/MNP and followed with stripping in DA free solution.
Subsequent to experimental and instrumental optimization, a calibration curve from 5.0×10-6 to 1.0×10-3 M DA with r2=0.999, DL = 7.6×10-7 M DA, and RSD = 4.6%, was obtained in the presence of 1.0×10-3 M AA.
Performance of the MCPE/MNP was successfully tested in a pharmaceutical sample.
American Psychological Association (APA)
Bagherzadeh, Mojtaba& Ansari, Somayeh& Riahi, Fariborz& Farahbakhsh, Anahita. 2013. A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles. International Journal of Electrochemistry،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-499315
Modern Language Association (MLA)
Bagherzadeh, Mojtaba…[et al.]. A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles. International Journal of Electrochemistry No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-499315
American Medical Association (AMA)
Bagherzadeh, Mojtaba& Ansari, Somayeh& Riahi, Fariborz& Farahbakhsh, Anahita. A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles. International Journal of Electrochemistry. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-499315
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-499315