کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1428888 | 987160 | 2013 | 5 صفحه PDF | دانلود رایگان |
An ionic liquid–TiO2 nanoparticle modified carbon paste electrode (IL–TiO2/CPE) was used as a fast and sensitive tool for the investigation of the electrochemical oxidation of benserazide using voltammetry. This modified electrode has been fabricated using hydrophilic ionic liquid (n-hexyl-3-methylimidazolium hexafluoro phosphate) as a binder. The modified electrode offers a considerable improvement in voltammetric sensitivity toward benserazide, compared to the bare electrode. Using differential pulse voltammetry (DPV), the electrocatalytic oxidation peak current of benserazide shows a linear calibration curve in the range of 1.0–600 μmol L− 1 benserazide. The limit of detection was equal to 0.4 μmol L− 1. The relative standard deviation (RSD%) for eight successive assays of 10 μmol L− 1 benserazide was 1.1%. Finally, the proposed method was successfully applied to the determination of benserazide in real samples such as blood serum and urine.
In this study, we describe the application of a novel ionic liquid–TiO2 nanoparticle–paste electrode as a suitable voltammetric sensor for the determination of benserazide. The electrocatalytic oxidation peak current of benserazide shows a linear calibration curve in the range of 1.0–600 μmol L− 1 benserazide with a limit of detection equal to 0.4 μmol L− 1.Figure optionsDownload as PowerPoint slideHighlights
► An ionic liquid–TiO2 nanoparticle modified carbon paste electrode was prepared.
► The modified electrode improved the voltammetric sensitivity of benserazide.
► Benserazide could be measured in the range of 1.0–600 μmol L− 1.
► Τhe sensor was applied to the determination of benserazide in real samples.
Journal: Materials Science and Engineering: C - Volume 33, Issue 2, 1 March 2013, Pages 831–835