Liquid-Liquid Extractions of Microamounts of137Cs and85Sr with Chlorinated Dicarbollide and Crown Ethers into Mixed Dodecanenitrile/n-dodecane Nonpolar Diluent

Autor:	Jiří Rais, Martin Bělohradský, Mária Lučaníková, Nina Šístková, Markéta Kolářová
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Process Chemistry and Technology General Chemical Engineering Extraction (chemistry) Filtration and Separation General Chemistry Ring (chemistry) Diluent Solvent Nuclear reprocessing chemistry Liquid liquid Organic chemistry Moiety Alkyl
Zdroj:	Separation Science and Technology. 46:2174-2182
ISSN:	1520-5754 0149-6395
DOI:	10.1080/01496395.2011.594849
Popis:	New methods of extraction of 137Cs and 85Sr 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::390619df2c9e68c5b779fe326e84cfcd https://doi.org/10.1080/01496395.2011.594849 Zobrazit plný text záznamu