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| Electrochemical Behaviors and Its Electrochemical Determination of Paeonol at APTS and ［BnMIM］PF6 Modified Carbon Paste Electrode |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:paeonol 3-aminopropyltriethoxysilane ［BnMIM］PF6 modified carbon paste electrode electrochemical method |
| Author | Institution |
| 张瑞，犹卫，彭娟，高作宁* |
宁夏大学化学化工学院 |
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| Abstract: |
| The electrochemical behaviors and electrochemical kinetic of paeonol(PN) at 3-aminopropyltriethoxysilane and ［BnMIM］PF6 modified carbon paste electrode (APTS-［BnMIM］PF6/CPE) were investigated.The electrochemical kinetic parameters of PN at APTS ［BnMIM］PF6/CPE were determined by cyclic voltammetry(CV) and chronoamperometry(CA).The experimental results indicated that PN electrochemical behavior exhibits an irreversible electrochemical oxidation process at APTS-［BnMIM］PF6/CPE.The oxidation peak current of PN versus its concentration had a good linear relationship in the concentration ranges of 9.0×10-7-2.0×10-4 mol?L-1,3.0×10-4-1.5×10-3 mol?L-1 with a detection limit(LOD,S/N=3) of 3.5×10-8 mol?L-1 and a limit of quantitation(LOQ,S/N=10) of 1.2×10-7 mol?L-1.The proposed method was successfully applied in the determination of PN contents in injection samples with their relative standard deviations of 0.58%-2.4% and recoveries of 96.0%-102.0%. |
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