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Journal of Liquid Chromatography

Volume 5, Issue 5, 1982

Adverse Effects of Lag Filters Used for Detector Baseline Noise Suppression in High Performance Liquid Chromatography

Adverse Effects of Lag Filters Used for Detector Baseline Noise Suppression in High Performance Liquid Chromatography

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DOI:
10.1080/01483918208060618
P. R. Haddada, R. W. Keatinga & G. K. C. Lowa

pages 853-867

Available online: 15 Dec 2006
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Abstract

Most detectors used for High Performance Liquid Chromatography employ a lag filter for suppression of baseline noise. This filter is characterised by its time constant, τ. At high values of τ (in excess of 0.5 sec), the lag filter seriously distorts the shape of a chromatographic peak, causing reduced peak heights, altered retention times and increased peak width. These changes result in significantly decreased resolution and decreased plate counts. These effects are investigated quantitatively.

 

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  • Citation information:
  • Available online: 15 Dec 2006

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  • a Department of Analytical Chemistry, University of New South Wales, P.O. Box 1 Kensington, New South Wales, Australia, 2033

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