Use of 1-alkyl-3-methylimidazolium hexafluorophosphate room temperature ionic liquids as chelate extraction solvent with 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione

Autor:	Hitomi Kawasumi, Mika Deguchi, Naoki Hirayama, Takaharu Honjo
Rok vydání:	2005
Předmět:	chemistry.chemical_classification Inorganic chemistry Extraction (chemistry) Analytical Chemistry Divalent Solvent chemistry.chemical_compound chemistry Nitric acid Hexafluorophosphate Ionic liquid Chelation Alkyl Nuclear chemistry
Zdroj:	Talanta. 65:255-260
ISSN:	0039-9140
DOI:	10.1016/j.talanta.2004.06.015
Popis:	Possible use of room temperature ionic liquids (RTILs) as chelate extraction solvent was evaluated by using 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF(6)]), 1-hexyl-3-methylimidazolium hexafluorophosphate ([hmim][PF(6)]) and 1-octyl-3-methylimidazolium hexafluorophosphate ([omim][PF(6)]). These RTILs showed high extraction performance for divalent metal cations with 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione (Htta). The extracted metals were back-extracted into 1moldm(-3) nitric acid quantitatively. Furthermore, the extracted species were estimated as neutral hydrated complexes M(tta)(2)(H(2)O)(n) (n= 1 or 2) for M = Ni, Cu and Pb and anionic complexes M(tta)(3)(-) for M = Mn, Co, Zn and Cd.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a3fc1c464fc5606ee94948538f7d4e0 https://doi.org/10.1016/j.talanta.2004.06.015 Zobrazit plný text záznamu Full Text from ScienceDirect