Liquid-Liquid Extractions of Microamounts of Cs-137 and Sr-85 with Chlorinated Dicarbollide and Crown Ethers into Mixed Dodecanenitrile/n-dodecane Nonpolar Diluent

0435195 - ÚOCHB 2015 RIV US eng J - Článek v odborném periodiku
Šístková, N. - Kolářová, M. - Lučaníková, M. - Bělohradský, Martin - Rais, J.
Liquid-Liquid Extractions of Microamounts of Cs-137 and Sr-85 with Chlorinated Dicarbollide and Crown Ethers into Mixed Dodecanenitrile/n-dodecane Nonpolar Diluent.
Separation Science and Technology. Roč. 46, č. 14 (2011), s. 2174-2182. ISSN 0149-6395. E-ISSN 1520-5754
Grant ostatní: GA ČR(CZ) GAP106/11/2319
Institucionální podpora: RVO:61388963
Klíčová slova: Cs-137 * Sr-85 * chlorinated bis(dicarbollide) * crown ethers
Kód oboru RIV: CC - Organická chemie
Impakt faktor: 1.088, rok: 2011

New methods of extraction of Cs-137 and Sr-85 into solvent mixture of dodecanenitrile with n-dodecane in the presence of various crown ethers and chlorinated dicarbollide are described. This is the first time when extraction with chlorinated dicarbollide anion was accomplished into a judiciously chosen nonpolar solvent. The theoretical reasoning leading to the choice of such nonpolar solvent is outlined. New crown ethers with laterally branched alkyl chain were synthesized and tested. These, when the same crown moiety is compared, are more effective for Sr2+ extraction than the commonly used DC18C6 (18C6 ring moiety), but less effective for Cs+ extraction compared with DB21C7 (21C7 moiety). The systems may be used both in analytical applications and, hopefully, after further development, as well in a nuclear reprocessing industry.
Trvalý link: http://hdl.handle.net/11104/0239106