Premium
A Novel Strategy for Simultaneous Determination of Dopamine and Uric Acid Using a Carbon Paste Electrode Modified with CdTe Quantum Dots
Author(s) -
Beitollahi Hadi,
Hamzavi Mozhdeh,
TorkzadehMahani Masoud,
Shanesaz Maryam,
Maleh Hassan Karimi
Publication year - 2015
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.201400635
Subject(s) - uric acid , dopamine , electrode , chemistry , cadmium telluride photovoltaics , electrochemistry , voltammetry , carbon paste electrode , cyclic voltammetry , analytical chemistry (journal) , inorganic chemistry , nuclear chemistry , materials science , chromatography , nanotechnology , biochemistry , medicine , endocrinology
A novel CdTe quantum dots‐modified carbon paste electrode (QDMCPE) was fabricated and used to study the electrooxidation of dopamine and uric acid and their mixtures by electrochemical methods. Using square wave voltammetry (SWV), a highly sensitive and simultaneous determination of dopamine and uric acid was explored at the modified electrode. SWV peak currents of dopamine and uric acid increased linearly with their concentrations in the ranges of 7.5×10 −8 –6.0×10 −4 M, and 7.5×10 −6 –1.4×10 −3 M, respectively. Finally this new sensor was used for determination of dopamine and uric acid in some real samples.