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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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CarbonPasteElectrodePreparedfromChemicallyModifiedMultiwallCarbonNanotubesfortheVoltammetricDeterminationofIsoprenalineinPharmaceuticalandUrineSamples
DOI: 10.1016/S1872-2067(11)60465-8, PP. 1919-1926
Keywords: isoprenaline,carbonnanotube,electrode,electrocatalyticeffect,voltammetry
Abstract:
？AcarbonpasteelectrodewithaddedmultiwallcarbonnanotubeschemicallymodifiedwithN-(3,4-dihydroxyphenethyl)-3,5-dinitrobenzamidewasusedastheelectrochemicalsensorforthedeterminationoftraceamountsofisoprenaline.Themodifiedelectrodeshowedgoodelectrocatalyticactivityfortheanodicoxidationofisoprenaline,whichwasduetoasubstantialdecreaseintheanodicoverpotential.Undertheoptimumconditions,measurementsusingsquarewavevoltammetryhadalinearrangeintherangeof0.3to125.0μmol/Lofisoprenalineandadetectionlimitof0.1μmol/L.Thediffusioncoefficientandkineticparametersweredeterminedusingelectrochemicalmethods.Therelativestandarddeviationforsevensuccessiveassaysof1.0and20.0μmol/Lisoprenalinewere1.9%and2.4%,respectively.Thiselectrochemicalsensorwassuccessfullyappliedforthedeterminationofisoprenalineinhumanurineandinjectionsolutionsamples.
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