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Isotopic separation of lithium ions by capillary zone electrophoresis
Author(s) -
Kamencev Mikhail,
Yakimova Nina,
Moskvin Leonid,
Kuchumova Irina,
Tkach Kirill,
Malinina Yulia,
Tungusov Oleg
Publication year - 2015
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.201500399
Subject(s) - oxalic acid , chemistry , capillary electrophoresis , chromatography , lithium (medication) , analytical chemistry (journal) , ion , fraction (chemistry) , isotope separation , electrophoresis , isotope , inorganic chemistry , medicine , organic chemistry , endocrinology , physics , quantum mechanics
Separation of 6 Li and 7 Li isotopes by CZE was demonstrated. The BGE contained 5 mM 4‐aminopyridine, 0.9 mM oxalic acid, 0.25 mM CTAB, and 0.25% w/v Tween 20 (рН = 9.2). The running conditions were +25 kV at 30°C with indirect photometric detection at 261 nm. Under optimal experimental conditions, the analysis time was less than 21 min. Separation of Li preparations with mole fraction of 6 Li ranging from 3.44 up to 90.38% was demonstrated.
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