Development Of A Sensor For L-dopa Based On Co(dmg) 2clpy/multi-walled Carbon Nanotubes Composite Immobilized On Basal Plane Pyrolytic Graphite Electrode

dc.creatorLeite F.R.F.
dc.creatorMaroneze C.M.
dc.creatorDe Oliveira A.B.
dc.creatorSantos W.T.P.D.
dc.creatorDamos F.S.
dc.creatorLuz R.D.C.S.
dc.date2012
dc.date2015-06-25T20:23:45Z
dc.date2015-11-26T15:18:52Z
dc.date2015-06-25T20:23:45Z
dc.date2015-11-26T15:18:52Z
dc.date.accessioned2018-03-28T22:28:29Z
dc.date.available2018-03-28T22:28:29Z
dc.identifier
dc.identifierBioelectrochemistry. , v. 86, n. , p. 22 - 29, 2012.
dc.identifier15675394
dc.identifier10.1016/j.bioelechem.2012.01.001
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84860284285&partnerID=40&md5=7a8559be40ec5bf33ae1212cffe04bb3
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/90077
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/90077
dc.identifier2-s2.0-84860284285
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1259637
dc.descriptionL-Dopa is the immediate precursor of the neurotransmitter dopamine, being the most widely prescribed drug in the treatment of Parkinson's disease. A sensitive and selective method is presented for the voltammetric determination of L-Dopa in pharmaceutical formulations using a basal plane pyrolytic graphite (BPPG) electrode modified with chloro(pyridine)bis(dimethylglyoximato)cobalt(III) (Co(DMG) 2ClPy) absorbed in a multi-walled carbon nanotube (MWCNT). Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy were used to characterize the materials. The electrocatalytical oxidation of L-Dopa using the Co(DMG) 2ClPy/MWCNT/BPPG electrode was investigated by cyclic voltammetry and square wave voltammetry. The parameters that influence the electrode response (the amount of Co(DMG) 2ClPy and of MWCNT, buffer solution, buffer concentration, buffer pH, frequency and potential pulse amplitude) were investigated. Voltammetric peak currents showed a linear response for L-Dopa concentration in the range of 3 to 100μM, with a sensitivity of 4.43μAcm -2/μM and a detection limit of 0.86μM. The related standard deviation for 10 determinations of 50μML-Dopa was 1.6%. The results obtained for L-Dopa determination in pharmaceutical formulations (tablets) were in agreement with the compared official method. The sensor was successfully applied for L-Dopa selective determination in pharmaceutical formulations. © 2012 Elsevier B.V.
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dc.description22
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dc.languageen
dc.publisher
dc.relationBioelectrochemistry
dc.rightsfechado
dc.sourceScopus
dc.titleDevelopment Of A Sensor For L-dopa Based On Co(dmg) 2clpy/multi-walled Carbon Nanotubes Composite Immobilized On Basal Plane Pyrolytic Graphite Electrode
dc.typeArtículos de revistas


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