高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (5): 604.

• 论文 • 上一篇    下一篇

交流示波极谱图的频谱分析

毕树平, 祁洪, 都思丹, 高鸿   

  1. 南京大学化学系, 210008
  • 收稿日期:1989-10-28 出版日期:1991-05-24 发布日期:1991-05-24
  • 通讯作者: 毕树平

Frequency-Spectrum Analysis of Oscillopolarogram

Bi Shu-ping, Qi Hong, Du Si-dan, Gao Hong   

  1. Department of Chemistry, Nanjing University, Nanjing, 210008
  • Received:1989-10-28 Online:1991-05-24 Published:1991-05-24

PDF (PC)

被引次数

23

摘要： 当交流电流密度很大时,"E-t"曲线出现上下电位时滞平阶,示波图两端将有稳定亮点,这时的"E-t"曲线由一系列高次谐波组成。本文首次利用富里叶变换对交流示波极谱图进行频谱分析,并将此频谱用于分析测试。1底液"E-t"曲线的频谱分析

关键词: 交流示波极谱图, 频谱分析, 富里叶变换

Abstract: Application of frequency-spectrum analysis to oscillopolarogram using Fourier transformation technique is given in this paper. Harmonic equations of E-t curve of the supporting electrolyte are given. Theoretical conclusions are confirmed by experimental results. The Faradic rectification is also explained.The frequency-spectrum can be used in analysis. The second and third harmonic potentials can be used to determine the concentration of the depolarizer. The lowest concentration determined is 1 × 10-6mol/L. The method is more sensitive than the conventional one and the precision is also better. THe factors influencing the frequency-spectrum are studied. The influence of dissolved oxygen on ordinary oscillopolarogram is not obvious but its effect can be seen easily in the frequency-spectrum analysis.

Key words: a. c. Oscillopolarogram, Frequency-spectrum analysis, Fourier transformation

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