A. N. Turanov*, V. K. Karandashev**, A. N. Yarkevich***, and Z. V. Safronova***
* Institute of Solid-State Physics, Russian Academy of Sciences,
Chernogolovka, Moscow oblast, 142432 Russia
** Institute of Microelectronic Technology and High-Purity Materials, Russian Academy of Sciences,
Chernogolovka, Moscow oblast, 142432 Russia
*** Institute of Physiologically Active Substances, Russian Academy of Sciences,
Chernogolovka, Moscow oblast, 142432 Russia
Received August 18, 2004
Abstract—The distribution of trace amounts of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and
Y between aqueous solutions of HCl and solutions of (diphenylphosphinylmethyl)phenylphosphinic acid in
1,2-dichloroethane was studied. The stoichiometry of the extracted complexes was determined, and the effect
of the nature of substituents at phosphorus in the extractant molecule on the extraction properties was consid-
ered. It is demonstrated that macroporous polymer sorbents impregnated with the extractant can be used for the
extraction and preconcentration of rare-earth elements from aqueous solutions over a broad range of HCl con-
centrations.
Pleiades Publishing home page | journal home page | top
If you have any problems with this server, contact webmaster.