caa a22 4500 469109750 CHVBK 20180323133107.0 cr unu---uuuuu 170328e19921001xx s 000 0 eng 10.1007/BF02035387 doi (NATIONALLICENCE)springer-10.1007/BF02035387 Extraction of micro- and macroconcentrations of rare earth ions with the mixture of D2EHPA and TBP in n-hexane and cyclohexane [Elektronische Daten] [V. Jedináková, P. Vaňura, J. Žilková, V. Bílek, F. Touati] The synergistic solvent extraction of Eu(III) and some other rare earth elements from nitrate solutions (HNO3+LiNO3) by a mixture of (TBP+D2EHPA) in n-hexane and cyclohexane has been investigated at 22 °C. Antagonism found in europium extraction from 0.1M HNO3 transforms into a synergistic effect. The synergistic effects existing for all investigated metals in extraction from 0.1M HNO3+3M LiNO3 were caused by formation of mixed complexes of the type Ln(D2EHPA)2nH2n−3+1(NO3)1TBPm, where 1=1 or 2. The selectivity of the extraction in a synergistic system is lower for the La−Yb pair than in the case of D2EHPA extraction under the same conditions. On the other hand, the application of the synergistic mixture is more suitable for Eu−Ho separation. Thus the synergistic effect can be used for the separation or refining of some lanthanides. Akadémiai Kiadó, 1992 Jedináková V. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut Vaňura P. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut Žilková J. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut Bílek V. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut Touati F. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 162/2(1992-10-01), 267-276 0236-5731 162:2<267 1992 162 10967 https://doi.org/10.1007/BF02035387 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02035387 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jedináková V. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut NATIONALLICENCE 700 1- Vaňura P. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut NATIONALLICENCE 700 1- Žilková J. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut NATIONALLICENCE 700 1- Bílek V. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut NATIONALLICENCE 700 1- Touati F. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague, (ČSFR) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 162/2(1992-10-01), 267-276 0236-5731 162:2<267 1992 162 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer