Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode
Huang, Jianshe, Liu, Yang, Hou, Haoqing, and You, Tianyan (2008) Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode. Biosensors and Bioelectronics, 24 (4). pp. 632-637.
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Abstract
Palladium nanoparticle-loaded carbon nanofibers (Pd/CNFs) were prepared by electrospinning and subsequent thermal treatment processes. Pd/CNFs modified carbon paste electrode (Pd/CNF-CPE) displayed excellent electrochemical catalytic activities towards dopamine (DA), uric acid (UA) and ascorbic acid (AA). The oxidation overpotentials of DA, UA and AA were decreased significantly compared with those obtained at the bare CPE. Differential pulse voltammetry was used for the simultaneous determination of DA, UA and AA in their ternary mixture. The peak separation between UA and DA, DA and AA was 148 mV and 244 mV, respectively. The calibration curves for DA, UA and AA were obtained in the range of 0.5–160 μM, 2–200 μM, and 0.05–4 mM, respectively. The lowest detection limits (S/N = 3) were 0.2 μM, 0.7 μM and 15 μM for DA, UA and AA, respectively. With good selectively and sensitivity, the present method was applied to the determination of DA in injectable medicine and UA in urine sample.
| Item ID: | 55329 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1873-4235 |
| Keywords: | electrospinning; Pd nanoparticle-loaded carbon nanofiber; simultaneous determination; dopamine; uric acid; ascorbic acid |
| Copyright Information: | Copyright © 2008 Elsevier B.V. All rights reserved. |
| Funders: | National Nature Science Foundation of China (NNSFC), Foundation of Distinguished Young Scholars of Jilin Province (FDYS), Chinese Academy of Sciences (CAS) |
| Projects and Grants: | NNSFC no. 20605020, FDYS no. 20060112, CAS no. KJCX2-YW-H11 |
| Date Deposited: | 22 Oct 2018 02:54 |
| FoR Codes: | 03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030102 Electroanalytical Chemistry @ 70% 03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl Structural) > 030604 Electrochemistry @ 30% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100% |
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