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First Electrochemical Report for Simultaneous Determination of Norepinephrine, Tyrosine and Nicotine Using a Nanostructure Based Sensor
Author(s) -
Molaakbari Elahe,
Mostafavi Ali,
Beitollahi Hadi
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400338
Subject(s) - detection limit , electrode , norepinephrine , electrocatalyst , cyclic voltammetry , electrochemical gas sensor , nanorod , electrochemistry , materials science , chemistry , analytical chemistry (journal) , inorganic chemistry , chromatography , nanotechnology , dopamine , medicine , endocrinology
A carbon paste electrode was modified with ZnO nanorods and 3‐(4′‐amino‐3′‐hydroxy‐biphenyl‐4‐yl)‐acrylic acid (3,4′AAZCPE) to cause electrocatalysis of norepinephrine oxidation. It has been found that the oxidation of norepinephrine at the surface of modified electrode occurs at a potential of about 180 mV less positive than that of an unmodified carbon paste electrode. Square wave voltammetry (SWV) exhibits linear dynamic range from 1.0×10 −7 to 8.0×10 −5 M and a detection limit of 3.9×10 −8 M for norepinephrine. In addition, this modified electrode was used for simultaneous determination of norepinephrine, tyrosine and nicotine.