H. Watarai et I. Takahashi, COMPARISON OF 3 DIFFERENT MICROEMULSION SYSTEMS AS THE RUN BUFFER FORTHE CAPILLARY ELECTROPHORETIC SEPARATION OF KETONE TEST SOLUTES, Analytical communications (Print), 35(9), 1998, pp. 289-292
Capillary electrophoretic behavior of ketones and beta-diketones was e
xamined using anionic, nonionic and cationic oil in water (o/w) microe
mulsions as separation media, containing naphthalene as a fluorophore
for means of indirect fluorescence detection. The migration behavior w
as greatly dependent on the charge type of microemulsions as well as o
n the composition and pH, Among the systems examined, sodium dodecyl s
ulfate (SDS) microemulsions were the most advantageous because of the
wider separation window, the higher dissolution capacity and the rapid
distribution rate. Capacity factors of the solutes in the electrophor
esis employing sos microemulsions were correlated to the distribution
and interfacial adsorption parameters determined in bulk two-phase sys
tems.