Sensitive voltammetric determination of diclofenac using room-temperature ionic liquid-modified carbon nanotubes paste electrode

被引：0
作者：
Ali A. Ensafi
Maedeh Izadi
Hassan Karimi-Maleh
机构：
[1] Isfahan University of Technology,Department of Chemistry
来源：
Ionics | 2013年 / 19卷
关键词：
Diclofenac analysis; Ionic liquid; Multiwall carbon nanotubes paste electrode; Voltammetry;
D O I：
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中图分类号：
学科分类号：
摘要：
An ionic liquid-modified carbon nanotubes paste electrode (IL/CNTPE) has been fabricated using hydrophilic ionic liquid (n-hexyl-3-methylimidazolium hexafluoro phosphate) as a binder. This electrode showed enhanced electrochemical response and strong analytical activity towards the direct electrochemical oxidation of diclofenac (DCF). The electron transfer coefficient, α, and charge transfer resistance (Rct) of DCF at the modified electrode were calculated. Under optimal conditions at pH 7.0, the anodic peak currents increased linearly with the concentration of DCF in the range of 0.5–300 μmol L−1 with a detection limit of 0.2 μmol L−1 (3σ). The interferences of foreign substances were investigated. Differential pulse voltammetry was used to check the applicability of the proposed sensor to the determination of DCF in real samples with satisfactory results.
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页码：137 / 144
页数：7
相关论文
共 154 条
  • [1] Arancibia JA(1999)undefined Analyst 124 1833-undefined
  • [2] Escandar GM(2003)undefined J Chromatogr B 788 57-undefined
  • [3] Roskar R(2010)undefined Chromatographia 71 549-undefined
  • [4] Kmetec V(1996)undefined J Chromatogr B 685 59-undefined
  • [5] Yilmaz B(2006)undefined J Chromatogr B 830 231-undefined
  • [6] Borenstein MR(2000)undefined J Pharm Biomed Anal 23 775-undefined
  • [7] Xue Y(2008)undefined J Chromatogr B 872 77-undefined
  • [8] Cooper S(2005)undefined Il Farmaco 60 855-undefined
  • [9] Tzeng TB(1995)undefined Talanta 42 105-undefined
  • [10] Kaphalia L(2005)undefined J Braz Chem Soc 16 1068-undefined
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