| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 741352 | Sensors and Actuators B: Chemical | 2016 | 8 Pages |
•Electrochemical behavior of 5-FU study using novel modified carbon paste electrode.•Synthesis and application of ZnFe2O4 as novel sensor for 5-FU determination.•Real sample analysis of 5-FU anticancer drug using novel sensor.
A carbon paste electrode modified in situ with ZnFe2O4 magnetic nanoparticles (ZnFe2O4/MNPs) and 1,3-dipropylimidazolium bromide ionic liquid was developed for the determination of 5-fluorouracile (5-FU) in drug samples. The electrochemical behavior of 5-FU was investigated employing linear sweep voltammetry (LSV), square wave voltammety (SWV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). ZnFe2O4/MNPs synthesized by co-precipitation method and characterized with different methods such as energy dispersive X-ray analysis (EDAX), X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). After optimization of experimental conditions employing the novel sensor at pH 7.0, the electro-oxidation peak currents for 5-FU was found to vary linearly with its concentrations in the range of 0.1–1400 μM using SWV method. The ZnFe2O4/MNPs ionic liquids carbon paste electrode (ZnFe2O4/MNPs/IL/CPE) showed several advantages, such as a high sensitivity in trace analysis, good detection limits and excellent reproducibility. Furthermore, the ZnFe2O4/MNPs/IL/CPE was successfully applied for the analysis of 5-FU in pharmaceutical and urine samples.
Graphical abstractIn this study, we report synthesized and application of novel ZnFe2O4 magnetic nanoparticles at a surface of ionic liquid carbon paste electrode as a high sensitive sensor for trace level analysis of 5-fluorouracile (5-FU) for the first time.Figure optionsDownload full-size imageDownload as PowerPoint slide
