| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 751355 | Sensors and Actuators B: Chemical | 2010 | 5 Pages |
Abstract
The nanocrystalline single-phase γ-Zn3Ni alloy modified composite graphite (nano-γ-Zn3Ni/CG) was employed for the detection of uric acid (UA) by voltammetric techniques. The non-enzymatic modified electrode had an excellent response and specificity for the electrocatalytic oxidation of UA in 0.2 M phosphate buffer (PB) (pH 7.0) at 280 mV vs. Ag/AgCl as compared to bare CG electrode at 360 mV. A limit of detection (S/N = 3) at 0.2 μM and concentration linear range of 1–400 μM UA were obtained. The presence of ascorbic acid (AA) did not interfere in the measurement. The nano-γ-Zn3Ni/CG was used for the determination of UA in untreated human urine and serum samples with satisfactory results.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Ramin M.A.Tehrani, Sulaiman Ab Ghani,