Smoothing of AC Polarographic Data by FFT Filtering

  • Johan Bobacka
  • Ari Ivaska


In ac polarography the measured signal often contains random fluctuations, usually referred to as noise. When the faradaic current is studied the noise becomes more and more disturbing when the concentration of the electroactive species decreases, and close to the detection limit the noise starts to mask the faradaic signal.


Fourier Spectrum Excitation Signal Filter Function Drop Mercury Electrode Circular Dichroism Signal 
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  1. 1.
    A. Bezegh and J. Janata, Anal. Chem., 59 (1987) 494A.CrossRefGoogle Scholar
  2. 2.
    J.W. Hayes, D.E. Glover and D.E. Smith, Anal. Chem., 45 (1973) 277.CrossRefGoogle Scholar
  3. 3.
    G. Horlick, Anal. Chem., 44 (1972) 943.CrossRefGoogle Scholar
  4. 4.
    C.S. Burrus and T.W. Parks, in: “DFT/FFT and Convolution Algoritms. Theory and Implementation”, John Wiley & Sons, New York, 1985.Google Scholar
  5. 5.
    D.E. Smith, Anal. Chem., 48 (1976) 517A.Google Scholar
  6. 6.
    A.J. Bard and L.R. Faulkner, in: “Electrochemical Methods, Fundamentals and Applications”, John Wiley & Sons, New York, 1980.Google Scholar
  7. 7.
    R.M. Mersereau and D.E. Dudgeon, in: “Proceedings of the IEEE”, 63, April (1975), 610.Google Scholar
  8. 8.
    C.A. Bush, Anal. Chem., 46 (1974) 890.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Johan Bobacka
    • 1
  • Ari Ivaska
    • 1
  1. 1.Laboratory of Analytical ChemistryÅbo Akademi UniversityTurku-ÅboFinland

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