Thumbnail
Access Restriction
Open

Author Holcomb, H. P. ♦ Yoe, J. H.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CHEMISTRY ♦ BENZOYL RADICALS ♦ COLOR ♦ DYES ♦ ETHERS ♦ IONS ♦ MEASURED VALUES ♦ METHANE ♦ PHOTOMETRY ♦ QUANTITATIVE ANALYSIS ♦ SENSITIVITY ♦ SEPARATION PROCESSES ♦ SOLVENT EXTRACTION ♦ SPECTRA ♦ URANIUM ♦ URANIUM ORES ♦ URANYL COMPOUNDS ♦ URANYL NITRATES
Abstract 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)
ISSN 00032700
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-05-01
Publisher Department Univ. of Virginia, Charlottesville
Journal Analytical Chemistry
Volume Number 32
Organization Univ. of Virginia, Charlottesville


Open content in new tab

   Open content in new tab