SPECTROPHOTOMETRIC DETERMINATION OF URANIUM WITH 3-(2-ARSONOPHENYLZAO)-4, 5- DIHYDROXY-2, 7-NAPHTHALENEDISULFONIC ACID (TRISODIUM SALT)

Journal Article · Sun May 01 04:00:00 EDT 1960 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

OSTI ID:4190873

Holcomb, H P; Yoe, J H

BS>A more comprehensive study of the Fritz and JohnsonRichard arsenazo methed (4) for the spectrophotometric determination of uranium is presented. Arsenazo instantaneously forms a stable blue complex with uranyl ions with a maximum absorbance at 590 m mu . The mole ratio of uranyl ion to compound is 1 to 1. The color reaction conforms to Beer's law and has a sensitivity of 1 part of uranium in 30,000,000 parts of solution. Tolerances to diverse ions, effect of temperature, and the separation of uranium from interfering ions by ether extraction of uranyl nitrate have been investigated. The accuracy of the new method compares well with the dibenzoylmethane method. The sensitivity of arsenazo is about 50% higher than that of dibenzoylmethane. The method has been applied to the analysis of synthetic samples containing uranium and various interfering ions, as well as to a number of uranium ores. (auth)

• Research Organization: Univ. of Virginia, Charlottesville
• NSA Number: NSA-14-013693
• OSTI ID: 4190873
• 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: 32; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BENZOYL RADICALS
CHEMISTRY
COLOR
DYES
ETHERS
IONS
MEASURED VALUES
METHANE
PHOTOMETRY
QUANTITATIVE ANALYSIS
SENSITIVITY
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTRA
URANIUM
URANIUM ORES
URANYL COMPOUNDS
URANYL NITRATES