Controlled Potential Coulometic Determination of Uranium and Copper in Homogeneous Reactor Fuels

Farrar, L.G.; Thomason, P.F.; Kelley, M.T.

doi:10.1021/ac60141a019

Cited by 19 publications

(8 citation statements)

References 5 publications

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“…The data of Tables I and II indicate that good precision and accuracy are obtained by this method and the data in Table II indicate that the method is unaffected by varying quantities of copper and uranium. There was no investigation of the effect of various fission products or ionic impurities because this was made by Farrar, Thomason, and Kelley (3) in a study of the controlled-potential uranium titrauon. The method described has been in use for some time without incider fc.…”

Section: Discussion and Resultsmentioning

confidence: 99%

Controlled-Potential Coulometric Determination of Copper and Uranium

Shults¹,

Thomason²

1959

Anal. Chem.

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Section: Discussion and Resultsmentioning

confidence: 99%

Controlled-Potential Coulometric Determination of Copper and Uranium

Shults¹,

Thomason²

1959

Anal. Chem.

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“…However, in some instruments these factors may differ as much as 1%. The derivation of these coulometric factors is given by Farrar, Thomason, and Kelley (2).…”

Section: Methodsmentioning

confidence: 99%

“…The equipment and procedure have been discussed (2). The steroids investigated have been prepared and characterized by various members of this laboratory.…”

Section: Methodsmentioning

confidence: 99%

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Controlled-Potential Coulometric Titration of Uranium(IV) and Uranium(VI) in Sodium Tripolyphosphate Medium.

Zittel¹,

Dunlap²

1963

Anal. Chem.

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A partially successful attempt was made in this investigation to eliminate molybdenum interference with the use of reagents that would strongly complex the molybdenum and move to its half-wave potential to more negative values, but have no effect on the Nb-EDTA complex. Reagents used were glycol dimercaptoacetate, 1,5-diphenyl-3-thiocarbohydrazide, quinoxaline-2,3dithiol, and mercaptoacetic acid. Of these, the glycol dimercaptoacetate was the most promising.The tantalum-EDTA complex was prepared (6) and found to have a halfwave potential more negative than the niobium-EDTA complex by about 0.5 volt. Nevertheless, tantalum interfered with the determination of niobium. The ratio of tantalum to niobium that may be tolerated in the polarographic determination of niobium was studied.The results are tabulated in Table IV.Each sample contained 20.00 yg. of Nb per ml. These solutions were 0.1M in EDTA and O.lili in sodium acetate, and had a pH of 4.06 ± 0.03.These results indicate that tantalum may be tolerated up to a ratio of 2:1, Ta:Nb with a deviation of 2.0% or less.

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“…Correct this quantity of Tc(VII) by subtracting the quantity of Tc(VII) equivalent to the background current. The derivation of the coulometric factor is given by Farrar, Thomason, and Kelley (2).…”

Section: Recommended Proceduresmentioning

confidence: 99%