Document Detail

Chromatographic resolution and isotherm determination of (R,S)-mandelic acid on Chiralcel-OD column.
MedLine Citation:
PMID:  22807393     Owner:  NLM     Status:  Publisher    
Resolution of racemic mandelic acid ((R,S)-MA) and numerical determination of binary competitive isotherm of (R,S)-MA on Chiralcel-OD column have been investigated in this study. The effects of the alcohol modifier and acidic additive in the mobile phase on the retention and enantioseparation of (R,S)-MA were studied at first. The inverse method was then used to determine the competitive isotherm parameters of (R,S)-MA by minimizing the sum of square deviations of the model predictions from the measured elution profiles. The results indicate that the mobile phase with 85% hexane/15% isopropanol/0.3% trifluoroacetic acid mixture gives the best resolution of (R,S)-MA and competitive-modified Langmuir isotherm provides the more accurate sorption mechanism of (R,S)-MA on the cellulose tris(3,5-dimethylphenylcarbamate) chiral stationary phase.
Shimin Mao; Yan Zhang; Sohrab Rohani; Ajay K Ray
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-17
Journal Detail:
Title:  Journal of separation science     Volume:  -     ISSN:  1615-9314     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088554     Medline TA:  J Sep Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Canada.
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