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A. A. Tereshchenkova, M. A. Statkus, T. I. Tikhomirova, G. I. Tsysin
Solid-phase extraction of lanthanum on
modified low-polarity sorbents
Abstract
Preconcentration of lanthanum on various
low-polarity sorbents (hexadecylsilica, hyper cross-linked polystyrene,
polyvinylidene difluoride, activated carbon) dynamically coated with
1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP) was studied. Reagent and
lanthanum distribution coefficients were evaluated under dynamic conditions.
Reagent elution was studied. Recovery of lanthanum with coated and uncoated
sorbents was studied. Efficiency of desorption with nitric acid solutions or
ethanol was studied.
Key words: lanthanum,
1-phenyl-3-methyl-4-benzoylpyrazol-5-one, PMBP, preconcentration, sorption,
hexadecylsilica, hyper cross-linked polystyrene, polyvinylidene difluoride,
activated carbon.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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