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Spectrophotometric Determination of Uranium Using Dibenzoylmethane.

Authors
Jones-MM; MacDuff-JS; Whitehead-AB
Source
MISSING :12 pages
Link
NIOSHTIC No.
10006862
Abstract
A procedure for the spectrophotometric determination of uranium has been developed in support of minerals research being conducted by the Bureau of Mines. Uranium is separated from the sample by tributylphosphate extraction from acid solution containing added aluminum nitrate and (ethylene dinitrilo)-tetraacetic acid solutions. The colored uranium-dibenzoylmethane complex is developed in the organic phase by adding an ethanol solution of dibenzoylmethane buffered with triethanolamine. Absorbance is measured at 410 nanometers, and the response is linear up to at least 100 micrograms u3o8 in the aqueous aliquot taken for analysis. Aliquots containing as little as 8 micrograms u3o8 may be analyzed with relative errors no greater than +/-5 percent. For aliquots containing at least 35 micrograms u3o8, relative standard deviation at the 95-percent confidence level is about +/-2.2 percent. Appropriate procedures are given for analyzing a wide variety of samples.
Publication Date
19800101
Document Type
IH; Report of Investigation;
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
RI 8433
NIOSH Division
SLRC;
Source Name
MISSING
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