Supercritical fluid extraction of lanthanides and actinides from solid materials with a fluorinated .beta.-diketone

Autor:	R. D. Brauer, Yuehe Lin, K. E. Laintz, Chien M. Wai
Rok vydání:	1993
Předmět:	Lanthanide chemistry.chemical_classification Supercritical carbon dioxide Chemistry Liquid–liquid extraction Metal ions in aqueous solution Inorganic chemistry Extraction (chemistry) Supercritical fluid extraction Compounds of carbon Supercritical fluid Analytical Chemistry
Zdroj:	Analytical Chemistry. 65:2549-2551
ISSN:	1520-6882 0003-2700
DOI:	10.1021/ac00066a027
Popis:	Direct extraction of metal ions by supercritical carbon dioxide is highly inefficient because of the charge neutralization requirement and the weak solute-solvent interactions. One suggested approach of extracting metal ions by supercritical carbon dioxide is to convert the charged species into metal chelates using a chelating agent in the fluid phase. This paper describes a method of extracting lanthanide and uranyl ions from a solid material by supercritical carbon dioxide containing a fluorinated beta-diketone, 2,2-dimethyl-6,6,7,7,8,8,8-heptafluoro-3,5-octanedione(FOD). Potential applications of this SFE method for separating the f-block elements from environmental samples are discussed. 13 refs., 2 tabs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::47c23b6b8f6b421bdb5a3ea3acd5c00a https://doi.org/10.1021/ac00066a027 Zobrazit plný text záznamu