Date of Award
Master of Science
Dr. Subra Muralidharan
Dr. Donald R. Schreiber
Dr. Brian P. Buffin
Masters Thesis-Open Access
We have investigated the separation of Co(II), Ni(II), Cu(II) and Zn(II) by the ligands 8-hydroxyquinoline- 5-sulfonic acid and 7-iodo-8-hydroxy-quinoline- 5-sulfonic acid in the presence of the anionic surfactant sodium dodecyl sulfate (SDS) and the cationic surfactant octyltrimethylammonium bromide (OTAB) . Baseline separations have been achieved by HPLC employing an octadecylsilanized silica (ODS) column. The underlying mechanisms of separation have been determined.
The significant new results of our studies are: (1) separation is not possible without the presence of surfactants and hence organized assemblies; (2) separations can be achieved under submicellar concentrations; (3) the separations are not driven by micelles; and (4) several competing equilibria must be taken into account to understand the mechanism of separation.
Cao, Hong, "Metal Ion Separation Mediated by Organized Molecular Assemblies" (2002). Master's Theses. 4335.