Document Detail


Single-molecule observation and chromatography unified by Lévy process representation.
MedLine Citation:
PMID:  15828789     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A renewed stochastic model of chromatography is proposed able to establish a conceptual link between the single-molecule dynamics observations in a given chromatographic system and chromatographic experiment results in the same media. The chromatographic peak is expressed through its Fourier transform as a function of the experimental sorption time distribution. The pertinent numerical procedure necessary for obtaining the chromatographic peak is described, and the numerical programming code is given. Two types of cases were considered, the first one where the sole discrete sorption time distribution is available, and the second one where the adsorption mechanism is made of a mixture of continuous and discrete sorption time distributions. The method is applied to experimental data found in the literature by determining typical chromatographic peak shapes on the basis of the experimental interface adsorption data. This renewed stochastic approach is based on the so-called Levy canonical description of stochastic processes and appears to be the most general basis for handling separation processes from a stochastic point of view.
Authors:
Luisa Pasti; Alberto Cavazzini; Attila Felinger; Michel Martin; Francesco Dondi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Analytical chemistry     Volume:  77     ISSN:  0003-2700     ISO Abbreviation:  Anal. Chem.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-04-14     Completed Date:  2007-03-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2524-35     Citation Subset:  -    
Affiliation:
Department of Chemistry, University of Ferrara, Via L. Borsari, 46, I-44100 Ferrara, Italy.
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