SEPARATION AND DETERMINATION OF SMALL AMOUNTS OF RARE EARTHS IN URANIUM

Journal Article · Fri Oct 31 23:00:00 EST 1958 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

DOI:https://doi.org/10.1021/ac60143a020· OSTI ID:4328599

Banks, C V; Thompson, J A; O'Laughlin, J W

A spectrophotometric method for the determination of total rare earths in the range 100 to 200 gamma is preseated. The chromophoric agent is 2-(1,8- dihydroxy3,6-disulfo-2-naphthylazo)-benzenearsonic acid (arsenazo). The absorbance is measured at 570 m mu and pH 7.0. The main objective of this investigation was to develop a method of determining rare earths in the presence of large amounts of uranium and small amounts of iron. As both metals interfere in the proposed spectrophotometric method for rare earths, an ion exchange method of separation is presented which is based on the absorption of uranium(VI) sulfate and iron(III) thiocyanate on a quaternary ammonium anion exchange resin. (auth)

• Research Organization: Iowa State Coll., Ames
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-001155
• OSTI ID: 4328599
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 30; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ACIDITY
AMMONIUM COMPOUNDS
ANIONS
ARSENAZO
ARSENIC COMPOUNDS
CHEMICALS
CHEMISTRY
COLOR
COMPOUNDS
CYANIDES
HYDROXIDES
IMPURITIES
INTERFERING ELEMENTS
ION EXCHANGE
ION EXCHANGE MATERIALS
IRON
IRON COMPOUNDS
LIGHT
NAPHTHALENE
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHENYL RADICALS
PHOTOMETRY
QUALITATIVE ANALYSIS
RARE EARTHS
RESINS
SEPARATION PROCESSES
SPECTROSCOPY
TRACE AMOUNTS
URANIUM
URANIUM SULFATES