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A. A. Abramov, B. Z. Iofa
Interference of elements at extraction by
oxygen-containing extractants. Calculation
of distribution coefficients
Abstract
Extraction
of tellurium (IV), tin (IV) and indium (III) by aliphatic alcohols and ketones
from hydrochloric acid solutions was studied either at individual separation of
elements or at their sumultaneous extraction. Electrocondactivities of extracts
were measured and using these data, dissosiation constants of the extracted
metal-halogen acids in organic solvents were calculated by Fuoss–Krauss method.
Method for the calculation of distribution coefficients of elements at their
simultaneous extraction according to hydrate-solvate and mixed solvate and
hydrate-solvate mechanisms was put forward. It is shown that the calculated
distribution coefficients are in a good agreement with experimental data.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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