Magnetophoretic mole-ratio method in solvent extraction systems

Hitoshi Watarai; Mariko Kurahashi

doi:10.1016/j.aca.2020.03.042

Magnetophoretic mole-ratio method in solvent extraction systems

Anal Chim Acta. 2020 May 15:1111:60-66. doi: 10.1016/j.aca.2020.03.042. Epub 2020 Mar 24.

Authors

Hitoshi Watarai¹, Mariko Kurahashi²

Affiliations

¹ Institute for NanoScience, Design, Osaka University, Toyonaka, Osaka, 560-8531, Japan. Electronic address: watarai@chem.sci.osaka-u.ac.jp.
² Institute for NanoScience, Design, Osaka University, Toyonaka, Osaka, 560-8531, Japan.

PMID: 32312397
DOI: 10.1016/j.aca.2020.03.042

Abstract

The magnetophoretic mole-ratio method was applied to the solvent extraction systems of paramagnetic metal ions with bis(2-ethylhexyl)hydrogen phosphate in 2-fluorotoluene. In the extraction of Mn(II), Co(II), Ni(II), Tb(III) and Dy(III), the compositions of the extracted metal complexes were determined from the measurements of the magnetophoretic velocity of a single droplet as a function of the mole ratio of the metal ion and the ligand.

Keywords: Magnetophoresis; Mole ratio method; Paramagnetic metal ions; Solvent extraction.