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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