A Novel Strategy for Simultaneous Determination of Dopamine and Uric Acid Using a Carbon Paste Electrode Modified with CdTe Quantum Dots |
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| Authors: | Hadi Beitollahi Mozhdeh Hamzavi Masoud Torkzadeh‐Mahani Maryam Shanesaz Hassan Karimi Maleh |
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| Institution: | 1. Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran tel: +983426226613;2. fax: +983426226617;3. Department of Chemistry, Graduate University of Advanced Technology, Kerman, Iran;4. Biotechnology Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran;5. Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), Tehran, Iran |
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| Abstract: | 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. |
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| Keywords: | Dopamine Uric acid Carbon paste electrode CdTe quantum dots |
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