M. Bagherzadeh, S. Ansari, Fariborz Riahi, A. Farahbakhsh
{"title":"A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles","authors":"M. Bagherzadeh, S. Ansari, Fariborz Riahi, A. Farahbakhsh","doi":"10.1155/2013/803672","DOIUrl":null,"url":null,"abstract":"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 of MNPs was evaluated as . 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 to M DA with , DL = M DA, and RSD = 4.6%, was obtained in the presence of M AA. Performance of the MCPE/MNP was successfully tested in a pharmaceutical sample.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-10"},"PeriodicalIF":2.3000,"publicationDate":"2013-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/803672","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of electrochemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/2013/803672","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 15
Abstract
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 of MNPs was evaluated as . 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 to M DA with , DL = M DA, and RSD = 4.6%, was obtained in the presence of M AA. Performance of the MCPE/MNP was successfully tested in a pharmaceutical sample.
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