%0 Journal Article
%T Simultaneousandsensitivedetectionofdopamineanduricacidusingapoly(L-methionine)/goldnanoparticle-modifiedglassycarbonelectrode
%A Reza Ojani
%A Jahan-Bakhsh Raoof
%A Ali Asghar Maleki
%A Saeid Safshekan
%J ´ß»¯Ñ§±¨
%P 423-429
%D 2014
%R 10.1016/S1872-2067(14)60022-X
%X £¿Anovelelectrochemicalsensorwasfabricatedbyelectrodepositionofgoldnanoparticlesonapoly(L-methionine)(PMT)-modifiedglassycarbonelectrode(GCE)toformanano-Au/PMTcomposite-modifiedGCE(nano-Au/PMT/GCE).Scanningelectronmicroscopyandelectrochemicaltechniqueswereusedtocharacterizethecompositeelectrode.Themodifiedelectrodeexhibitedconsiderableelectrocatalyticactivitytowardstheoxidationofdopamine(DA)anduricacid(UA)inphosphatebuffersolution(pH=7.00).DifferentialpulsevoltammetryrevealedthattheelectrocatalyticoxidationcurrentsofDAandUAwerelinearlyrelatedtoconcentrationovertherangeof5.0¡Á10-8to10-6mol/LforDAand7.0¡Á10-8to10-6mol/LforUA.Thedetectionlimitswere3.7¡Á10-8mol/LforDAand4.5¡Á10-8mol/LforUAatasignal-to-noiseratioof3.Accordingtoourexperimentalresults,nano-Au/PMT/GCEcanbeusedasasensitiveandselectivesensorforsimultaneousdeterminationofDAandUA.
%K Voltammetry
%K Goldnanoparticle
%K Poly(L-methionine)
%K Dopamine
%K Uricacid
%U http://www.chxb.cn/CN/abstract/abstract21259.shtml