Preconcentration techniques for uranium(VI) and thorium(IV) prior to analytical determination-an overview.

Adsorption of Cu(II), Zn(II), Ni(II), Pb(II), and Cd(II) from aqueous solution on Amberlite IR-120 synthetic resin

Adsorption behavior of Hg(II), Pb(II), and Cd(II) from aqueous solution on Duolite C-433: a synthetic resin

The study of various parameters affecting the ion exchange of Cu2+, Zn2+, Ni2+, Cd2+, and Pb2+ from aqueous solution on Dowex 50W synthetic resin.

Adsorption characteristics of Cu(II) onto ion exchange resins 252H and 1500H: kinetics, isotherms and error analysis.

A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group Synthesis and sorption behaviour for trace metal ions

A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group. Chromatographic application to the preconcentration and separation of some trace metal ions including uranium

A study on the separation of Li isotopes was carried out with a resin having monobenzo-15-crown-5 as a functional group, synthesized by substitution reaction of chloromethylated styrene-DVB copolymer with 4′-aminobenzo-15-crown-5. Adsorption properties of the resin for Li+ were invesgated with batch method in various solvents and counter anions. Upon column chromatography [0.9 cm (I. D.)×25 cm (height)] using 5% (v/v) H2O in acetonitrile as an eluent, single separation factor, α, 1.053 (±0.005), (6Li/7Li)resin/ (6Li/7Li) solution was obtained by the GLUECKAUF method from the elution curve and isotope ratios.

Lithium isotope separation on a monobenzo-15-crown-5 resin

Separation and preconcentration of uranium from geological materials with chelating resin containing 4-(2-thiazolylazo)resorcinol functional groups

The chromatographic separation of lithium isotopes was investigated by chemical exchange with the recently synthesized polymer-bound dibenzo pyridino diamide azacrown (DBPDA) and reduced dibenzo pyridino diamide azacrown (RDBPDA). Column chromatography was employed for the determination of the effect of solvents and ligand conformation on the separation coefficients. The maximum separation coefficients, e, for the DBPDA and RDBPDA at 20.0±0.02°C with acetonitrile as eluent, were found to be 0.034±0.002 and 0.035±0.002, respectively. The isotope separation coefficient and adsorption capability of the lithium ion on the DBPDA and RDBPDA were only slightly dependent on ligand structure, but strongly dependent on the solvent. DBPDA and RDBPDA appeared to have almost the same value for the isotope separation coefficient of lithium.

Lithium isotope separation by chemical exchange with polymer-bound azacrown compounds

Moo Yul Suh

Papers

A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group Synthesis and sorption behaviour for trace metal ions

A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group. Chromatographic application to the preconcentration and separation of some trace metal ions including uranium

Lithium isotope separation on a monobenzo-15-crown-5 resin

Separation and preconcentration of uranium from geological materials with chelating resin containing 4-(2-thiazolylazo)resorcinol functional groups

Lithium isotope separation by chemical exchange with polymer-bound azacrown compounds