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

A. Felinger, Tamás L. Pap, János Inczédy

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

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
Volume248
Issue number2
DOIs
Publication statusPublished - Aug 1 1991

Fingerprint

Cutoff frequency
Signal-To-Noise Ratio
Fourier Analysis
smoothing
signal-to-noise ratio
Fourier transform
Signal to noise ratio
Fourier transforms
Probability density function
discontinuity
Noise
method
evaluation
parameter

Keywords

  • Chromatography
  • Fourier-transform filter

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

Improvement of the signal-to-noise ratio of chromatographic peaks by Fourier transform. / Felinger, A.; Pap, Tamás L.; Inczédy, János.

In: Analytica Chimica Acta, Vol. 248, No. 2, 01.08.1991, p. 441-446.

Research output: Contribution to journalArticle

Felinger, A. ; Pap, Tamás L. ; Inczédy, János. / Improvement of the signal-to-noise ratio of chromatographic peaks by Fourier transform. In: Analytica Chimica Acta. 1991 ; Vol. 248, No. 2. pp. 441-446.
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