Determination of uranium(IV), uranium(VI), and total uranium in phosphoric acid process solutions by tri-n-octylamine extraction and polarography

Hodara, I.; Balouka, I.

doi:10.1021/ac60304a013

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1976

2001

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Cited by 16 publications

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“…To evaluate the use of DPP in speciation studies involving complexes of trace metal ions, we have found it necessary to investigate the theoretical behavior of DPP in systems complicated by rate determining chemical and electrochemical steps (6).…”

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confidence: 99%

Determination of uranium in plutonium-238 metal and oxide by differential pulse polarography

Fawcett¹

1976

Anal. Chem.

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A differential pulse polarographic method was developed for the determination of total uranium In 238Pu metal and oxides. A supporting electrolyte of 0.5 M ascorbic acid in 0.15 N H2S04 was found satisfactory for the determination of 500 ppm or more of uranium in 10 mg or less of plutonium. A relative standard deviation of 0.27 to 4.3% was obtained in the analysis of samples ranging in uranium content from 0.65 to 2.79%. The limit of detection was 0.18 /ug ml-1. Peak current was a linear function of uranium concentration up to at least 100 /ug ml-1. Amounts of neptunium equal to the uranium content were tolerated. The possible interference of a number of other cations and anions was investigated.

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confidence: 99%