title: Extraction of natural radionuclides from aqueous solutions by novel maltolate-based task-specific ionic liquids.
abstract: Two novel maltol-based ionic liquids, namely [A336][Mal] and [C101][Mal], were synthesized as potential extracting agents for radionuclides from water. These two room temperature task-specific ionic liquids could be easily prepared by anion metathesis starting from commercially available materials. The isolated compounds were characterized by standard analytical methods. Their application as extraction agent for Unat.,234Th,210Pb,210Bi,210Po and226Ra was elucidated by liquid-liquid extraction and scintillation counting. Uranium was totally extracted by both ionic liquids over a broad pH range (2-8), while the other radionuclides were removed with differing efficacies depending on the respective pH value.
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Sonja
authors.initials: S
authors.lastname: Platzer
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Orhan
authors.initials: O
authors.lastname: Sap
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Raphlin
authors.initials: R
authors.lastname: Leyma
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Wallner
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Franz
authors.initials: F
authors.lastname: Jirsa
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kandioller
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Regina
authors.initials: R
authors.lastname: Krachler
authors.affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.
authors.forename: Bernhard K
authors.initials: BK
authors.lastname: Keppler
keywords: Extraction of radionuclides; Ionic liquids; Maltol; Natural radionuclides