Electrocatalytic Oxidation of Salbutamol at SDBS Self-assembled Monolayers and  ［BnMIM］PF6 Modified Carbon Paste Electrode and Its Electrochemical Determination

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Electrocatalytic Oxidation of Salbutamol at SDBS Self-assembled Monolayers and ［BnMIM］PF6 Modified Carbon Paste Electrode and Its Electrochemical Determination

- Electrocatalytic Oxidation of Salbutamol at SDBS Self-assembled Monolayers and ［BnMIM］PF6 Modified Carbon Paste Electrode and Its Electrochemical Determination
- Vol. 31, Issue 8, Pages: 962-966(2012)
- 作者机构：
  
  宁夏大学化学化工学院
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Electrocatalytic Oxidation of Salbutamol at SDBS Self-assembled Monolayers and ［BnMIM］PF6 Modified Carbon Paste Electrode and Its Electrochemical Determination. [J]. 31(8):962-966(2012)
DOI：

Electrocatalytic Oxidation of Salbutamol at SDBS Self-assembled Monolayers and ［BnMIM］PF6 Modified Carbon Paste Electrode and Its Electrochemical Determination. [J]. 31(8):962-966(2012) DOI：

摘要

研究了沙丁胺醇(SAL)在表面活性剂十二烷基苯磺酸钠(SDBS)现场自组装膜与离子液体1-苄基-3-甲基咪唑六氟磷酸盐(［BnMIM］PF6)复合修饰碳糊电极(SDBS-［BnMIM］PF6/CPE)上的电催化氧化行为和电化学动力学性质。实验结果表明，SDBS-［BnMIM］PF6/CPE对SAL的电化学氧化具有良好的催化作用。用循环伏安法(CV)和计时电流法(CA)测得SAL在SDBS-［BnMIM］PF6/CPE上的电极反应过程动力学参数。用方波伏安法(SWV)测得SAL氧化峰电流(Ipa)与其浓度在9.0×10-5~ 1.0×10-3 mol?L-1范围内呈良好的线性关系，检出限(S/N=3)为1.08×10-6 mol?L-1。运用该方法对市售吸入用沙丁胺醇溶液中SAL的含量进行了测定，结果满意。

Abstract

The electrocatalytic oxidation behaviors and electrochemical kinetics of salbutamol(SAL) were investigated at sodium dodecyl benzenesulfonate(SDBS) self-assembled-monolayers and 1-benzy-3-methylimidazole hexafluorophosphate(［BnMIM］PF6) modified carbon paste electrode(SDBS-［BnMIM］PF6/CPE).The experimental results indicated that the SDBS-［BnMIM］PF6/CPE showed an excellent electrocatalytic activity toward SAL.The electrochemical kinetic parameters were determined by cyclic voltammetry(CV) and chronoamperometry(CA) at SDBS-［BnMIM］PF6/CPE.The catalytic oxidation peak current of SAL versus its concentration had a good linear relationship in the concentration range of 9.0×10-5-1.0×10-3 mol?L-1 and the detection limit(S/N=3) was 1.08×10-6 mol?L-1 by square wave voltammetric(SWV) method.The proposed method was successfully applied in the electrochemical quantitative determination of SAL content in commercial inhaled salbutamol solution.

关键词

沙丁胺醇十二烷基苯磺酸钠离子液体修饰碳糊电极电催化氧化

Keywords

salbutamolsodium dodecyl benzenesulfonate(SDBS)ionic liquidmodified carbon paste electrodeelectrocatalytic oxidation

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