Dybczynski, Rajmund S. published the artcileSeparation of Rare Earth Elements (REE) by Ion Interaction Chromatography (IIC) Using Diglycolic Acid (ODA) as a Complexing Agent, Quality Control of 110-99-6, the main research area is separation rare earth element ion interaction chromatog; diglycolic acid complexing agent.
Abstract: The possibility of rare earth elements (REE) separation by ion interaction chromatog. (IIC) employing their complexes with diglycolic acid (ODA) in anion exchange mode has been studied theor. and exptl. Calculations, assuming that only trivalent complex is significantly uptaken by the stationary phase, indicated that at at pH 4-6, the retention in the lanthanide series should increase from La to the Tb-Dy-Ho region with yttrium showing apparent at. number (ApparatusAt.Number) of 671/2 and then decrease with further increase of at. number Chromatog. experiments in the system: Column: Eternity C18-mobile phase 5 mM ODA/8.6 mM TBAOH/0.6 mM HNO3; pH 4.60 confirmed theor. predictions. It was found that scandium at pH ≥ 4.0 elutes in front of the whole REE group but at low pH enters the region of light lanthanides. The non-monotonical change of affinity of the REE with the increase of at. number results in quite unusual order of elution of REE namely: Sc < La < Ce < Lu < Pr < Yb < Nd < Tm < Sm < Eu < Er≈Y < Gd < Ho < Tb≈Dy. Chromatographia published new progress about Anion exchange. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2'-Oxydiacetic acid, and the molecular formula is C4H6O5, Quality Control of 110-99-6.
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