0435195 - ÚOCHB 2015 RIV US eng J - Journal Article
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 - others:GA ČR(CZ) GAP106/11/2319
Institutional support: RVO:61388963
Keywords : Cs-137 * Sr-85 * chlorinated bis(dicarbollide) * crown ethers
Subject RIV: CC - Organic Chemistry
Impact factor: 1.088, year: 2011 ; AIS: 0.3, rok: 2011
DOI: https://doi.org/10.1080/01496395.2011.594849

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.
Permanent Link: http://hdl.handle.net/11104/0239106