Document Detail

Solvent effects in microemulsion electrokinetic chromatography.
MedLine Citation:
PMID:  12761783     Owner:  NLM     Status:  MEDLINE    
The contribution of organic solvents to the mechanisms responsible for separation in microemulsion electrokinetic chromatography (MEEKC) is reviewed. Organic solvents are needed as constituents of microemulsions for a series of reasons. (i). A water-immiscible organic substance is used to form the actual oil phase of the microemulsion, (ii). a less hydrophobic solvent is commonly employed as a so-called co-surfactant, and (iii). in many cases an organic modifier is added to influence the solubility of the analytes in the aqueous phase of the microemulsion. All these organic solvents do not only participate in the separation in their actual function, but also interact with each other and the analytes. Variations in separation selectivities triggered by changes in the nature and/or concentration of these organic solvents present in microemulsions suitable for MEEKC are discussed in this work.
Christian W Klampfl
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Electrophoresis     Volume:  24     ISSN:  0173-0835     ISO Abbreviation:  Electrophoresis     Publication Date:  2003 May 
Date Detail:
Created Date:  2003-05-22     Completed Date:  2004-04-15     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8204476     Medline TA:  Electrophoresis     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1537-43     Citation Subset:  IM    
Department of Analytical Chemistry, Johannes Kepler-University Linz, Linz, Austria.
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MeSH Terms
Chromatography, Micellar Electrokinetic Capillary / methods*
Organic Chemicals / chemistry
Solvents / chemistry*
Surface-Active Agents / chemistry
Reg. No./Substance:
0/Emulsions; 0/Organic Chemicals; 0/Solvents; 0/Surface-Active Agents

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