DIRECT SPECTROPHOTOMETRIC DETERMINATION OF URANIUM IN CYCLOHEXANE SOLUTIONS OF TRI-n-OCTYLPHOSPHINE OXIDE
A method for the direct determination of uranium in a cyclohexane solution of tri-n-octylphosphine oxide (TOPO) is presented. The adduct, UO/sub 2/ Cl/sub 2/ x 2TOPO, that is formed when uranium(VI) is extracted from hydrochloric acid solutions by tri-n-octylphosphine oxide absorbs light in the ultraviolet region. This absorbance is measured at 230 m mu vs. a TOPO-cyclohexane solution that was contacted with hydrochloric acid of the same concentration as that in the test aliquot. The molar absorbance index is 5500. The method is not selective; of the elements that are extracted by TOPO from hydrochloric acid, iron(III), zirconium, molybdenum, tin and thorium, only thorium can be tolerated. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- NSA Number:
- NSA-15-007274
- OSTI ID:
- 4118618
- Report Number(s):
- CF-59-4-100
- Country of Publication:
- United States
- Language:
- English
Similar Records
SEPARATION OF URANIUM BY SOLVENT EXTRACTION WITH TRI-N-OCTYLPHOSPHINE OXIDE. DIRECT COLORIMETRIC DETERMINATION WITH DIBENZOYLMETHANE
Substoichiometric extraction of cations with mixtures of hexafluoroacetylacetone and tri-n-octylphosphine oxide in cyclohexane
STUDIES ON THE TRI-n-OCTYLPHOSPHINE OXIDE COMPLEX OF URANYL NITRATE
Journal Article
·
Fri Oct 31 23:00:00 EST 1958
· Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.
·
OSTI ID:4285932
Substoichiometric extraction of cations with mixtures of hexafluoroacetylacetone and tri-n-octylphosphine oxide in cyclohexane
Journal Article
·
Mon Apr 01 00:00:00 EDT 1974
· Analytical Chemistry
·
OSTI ID:4318443
STUDIES ON THE TRI-n-OCTYLPHOSPHINE OXIDE COMPLEX OF URANYL NITRATE
Journal Article
·
Fri Jan 31 23:00:00 EST 1964
· Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron
·
OSTI ID:4085920