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Titolo:
DUAL-CHANNEL RESPONSE RATIOS FROM AN INTEGRATIVE ALGORITHM
Autore:
SINGH H; MILLIER B; AUE WA;
Indirizzi:
DALHOUSIE UNIV,DEPT CHEM HALIFAX NS B3H 4J3 CANADA DALHOUSIE UNIV,DEPT CHEM HALIFAX NS B3H 4J3 CANADA
Titolo Testata:
Journal of chromatography
fascicolo: 2, volume: 687, anno: 1994,
pagine: 291 - 301
Fonte:
ISI
Lingua:
ENG
Soggetto:
2-DIMENSIONAL CONDUCTOMETRIC DETECTION; FLAME PHOTOMETRIC DETECTION; POSTSUPPRESSOR CONVERSION; ION CHROMATOGRAPHY; ELUITE ACIDS; SELECTIVITY; SPECIFICITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
H. Singh et al., "DUAL-CHANNEL RESPONSE RATIOS FROM AN INTEGRATIVE ALGORITHM", Journal of chromatography, 687(2), 1994, pp. 291-301

Abstract

An integrative algorithm has been developed, and compared with existing differential algorithms, for automatically determining the responseratios of peaks from a dual-channel flame photometric detector. The comparison was carried out using high and low, and constant and variable concentrations of an organosulfur test compound; under different degrees of solvent quenching and at two sets of detector flow conditions;and with and without digital filtering. The new integral algorithm performed as well as -and, particularly in the presence of strong noise,significantly better than- the existing differential ones. Typically,the response ratios of good peaks varied by 2 to 3% R.S.D. for different, and by ca. 0.5% R.S.D. for similar concentrations; the former, larger variation owing to previously unnoticed spectral changes. Different algorithms, working on single, large and well-smoothed peaks, varied among themselves by typically less than 1% R.S.D. The integral response ratios were displayed on the screen in graphic form and simultaneously printed in numeric form. At the discretion of the operator, they could also be printed in the form of a scalable ''response-ratio chromatogram'', with or without the constituent signal traces.

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Documento generato il 02/12/20 alle ore 15:14:48