Abstract
The distribution of trace amounts of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y nitrates between HNO3 aqueous solutions and fullerene black (a product of electric are evaporation of graphite) impregnated with tetraphenylmethylenediphosphine dioxide (L) as a function of the concentrations of HNO3 in the aqueous phase and L in the sorbent phase was considered. It was shown that REE(III) ions pass into the sorbent phase in the form of Ln(NO3)3L3 solvated nitrates; the efficiency of extraction of these ions decreases with an increase in the REE atomic number in the periodic table.
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