TY - JOUR AU - Makrlík, Emanuel AU - Vaňura, Petr AU - Selucký, Pavel AU - Brusko, Vasily PY - 2018/02/09 Y2 - 2024/03/29 TI - Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate JF - Journal of the Serbian Chemical Society JA - J. Serb. Chem. Soc. VL - 83 IS - 1 SE - Analytical Chemistry DO - 10.2298/JSC170220110M UR - https://www.shd-pub.org.rs/index.php/JSCS/article/view/4715 SP - 51-60 AB - <p class="AbstractChar">Solvent extraction of micro-amounts of Eu<sup>3+</sup> and Am<sup>3+</sup> from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H<sup>+</sup>B<sup>-</sup>) and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate (L) was studied. The equilibrium data were explained assuming that the species HL<sup>+</sup>, ML<sub>2</sub><sup>3+</sup> and ML<sub>3</sub><sup>3+</sup> (M<sup>3+</sup> = Eu<sup>3+</sup> or Am<sup>3+</sup>) are extracted into the org­anic phase. Extraction and stability constants of the cationic complex species in nitro­benzene saturated with water were determined and discussed. From the experi­mental results, it is obvious that this effective ligand L for the Eu<sup>3+</sup> and Am<sup>3+</sup> could be considered as a potential extraction agent for nuclear waste treatment.</p> ER -