Original scientific paper

Solvent Extraction of Niobium and Tantalum. II. Extraction and Separation of Zirconium and Niobium with Di-n-octyl-methylene- bis-phosphonic Acid

H. Goričan ; Institute »Ruder Boskovic«, Zagreb and Laboratory of Analytical Chemistry, Faculty of Science, Universit·y of Zagreb, Croatia, Yugoslavia
C. Djordjević ; Institute »Ruder Boskovic«, Zagreb and Laboratory of Analytical Chemistry, Faculty of Science, Universit·y of Zagreb, Croatia, Yugoslavia

Abstract

A mehod for separating 95Zr from 1'5Nb by extraction process
with din-n-octyl-methylene-bis-phosphonic acid (DOMPA), of the for
mula CH2[PO(OCsH11)0Hh, is ' given. Extraction behav iour of both
metals under different conditions has been studied and extraction
from sulphuric, hydrochloric, hydrofluoric and oxalic acid solutions
is described, The influence of these acids and reagent cone. on
separation of niobium and zirconium is discussed. It has been found
that by extraction with DOMPA a quantitative separation is possible
from mixed oxalic and sulphuric acid solutions of metal cone.
lower than 10-s, as well as separation of radionuclides from carrier
free solutions.

Keywords

Hrčak ID:

208197

URI

https://hrcak.srce.hr/208197

Publication date:

31.3.1966.

Visits: 789 *