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
  
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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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