-
[show abstract]
[hide abstract]
ABSTRACT: Adenine, adenosine-5'-monophosphate and adenosine-5'-triphosphate were separated by fluidic chip with PAA membranes using an aqueous mobile phase.
Lab on a Chip 06/2009; 9(10):1337-9. · 5.67 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The possibility of using porous anodic alumina membranes as a column for normal-phase high performance liquid chromatography was evaluated using phenol and toluene with mobile phases having different solvent compositions.
Chemical Communications 04/2007; · 6.17 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The permeation fluxes of phenol, benzene sulfonate (BS) and benzene disulfonate (BDS) through a porous anodic alumina membrane with the perpendicularly oriented silica-surfactant nanochannel assembly membrane (NAM) were measured in water-ethanol mixture media. The permeation flux depended on solute charges and on solvent composition. As the ethanol ratio increased, the fluxes of BS and BDS increased and the flux of phenol decreased. The results of extraction/elution experiments also depended on the solute charges and the solvent composition. Chromatographic experiments in n-hexane showed that dipole and hydrophobic interactions affect the retention of solutes. Permeation of the solute across the NAM in water-ethanol mixture is likely to be determined by various factors such as dipole interaction, hydrophobic interaction, solvation, and anion-exchange efficiencies.
Analytical Sciences 01/2007; 22(12):1495-500. · 1.25 Impact Factor
