%0 Journal Article
%T AvoltammetricsensorwithamultiwallcarbonnanotubepasteelectrodeandnaphtholgreenasamediatorforthedeterminationofN-actylcysteineinthepresenceoftryptophan
%A Mohsen Keyvanfard
%A Maryam Tahmasbi
%A Hassan Karimi-Maleh
%A Khadijeh Alizad
%J ´ß»¯Ñ§±¨
%P 501-508
%D 2014
%R 10.1016/S1872-2067(14)60019-X
%X £¿AmultiwallcarbonnanotubemodifiedelectrodepreparedbyincorporatingmultiwallcarbonnanotubesintheelectrodeofasensorandnaphtholgreenasahomogeneousmediatorwasusedasavoltammetricsensorforthedeterminationofN-actylcysteine(N-AC)inthepresenceoftryptophan(Trp).ThevoltammogramsofdifferentialpulsevoltammetryofN-ACinamixturewithTrpwereseparatedfromeachotherbyapotentialdifferenceof200mV,whichallowedthedeterminationofbothN-ACandTrpsimultaneously.Undertheoptimumconditions,theelectrocatalyticcurrentsincreasedlinearlywithN-ACconcentrationintherangeof0.25-400¦Ìmol/L(twolinearsegmentswithdifferentslopes).ThedetectionlimitforN-ACwas0.08¦Ìmol/L.Thekineticparametersofthesystemweredeterminedusingelectrochemicalmethods.ThemethodwasappliedforthedeterminationofN-ACindrugandurinesamples.
%K N-actylcysteine
%K Tryptophan
%K Multiwallcarbonnanotube
%K Naphtholgreen
%K Sensor
%U http://www.chxb.cn/CN/abstract/abstract21271.shtml