Improvement of the signal-to-noise ratio of chromatographic peaks by Fourier transform

Attila Felinger, Tamás L. Pap, János Inczédy

Research output: Contribution to journalArticle

20 Citations (Scopus)


A method is described for digital smoothing of chromatographic signals by using Fourier transform and is compared with some earlier methods. A new procedure is reported for determining the correct value of the cutoff frequency; a smoothing window is described which distorts the frequency function only slightly at low frequencies but smooths the data to zero at the cutoff frequency without sharp discontinuity. These operations produce effective noise filtering with little deformation of peaks. The relative improvement of the signal-to-noise ratio is significant. Exact evaluation of peak parameters is made possible by these results.

Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalAnalytica Chimica Acta
Issue number2
Publication statusPublished - Aug 1 1991


  • Chromatography
  • Fourier-transform filter

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Fingerprint Dive into the research topics of 'Improvement of the signal-to-noise ratio of chromatographic peaks by Fourier transform'. Together they form a unique fingerprint.

  • Cite this