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交流示波极谱图的频谱分析 被引量:6

Frequency-Spectrum Analysis of Oscillopolarogram
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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” 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 × 10-6 mol/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.
机构地区 南京大学化学系
出处 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 1991年第5期604-606,共3页 Chemical Journal of Chinese Universities
关键词 交流示波极谱 频谱分析 傅氏变换 a. c. Oscillopolarogram, Frequency-spectrum analysis, Fourier transformation
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参考文献4

  • 1毕树平,应用化学,1987年,4卷,6期,54页
  • 2毕树平,应用化学,1987年,4卷,4期,6页
  • 3谷林瑛,电化学方法.原理及应用,1986年
  • 4张巨洪,BASIC语言程序库,1983年

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