Spectrophotometric Determination of Uranium with Thiocyanate PDF Download
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Author: Michael A. DeSesa
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 20
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Author: Michael A. DeSesa
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 20
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Author: Oscar A. Nietzel
Publisher:
ISBN:
Category : Hexone
Languages : en
Pages : 48
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Author: H. I. Feinstein
Publisher:
ISBN:
Category : Ores
Languages : en
Pages : 20
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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The thiocyanate-TBP method has been used daily at the National Institute for Metallurgy for approximately nine years for the determination of small amounts of uranium in Witwatersrand conglomerate and other siliceous ores. It replaced a spectrophotometric method that required the separation of uranium from most other elements in the sample by extraction with ether. The method involves the formation of uranyl thiocyanate complex of uranium in the presence of EDTA and sodium formate, the extraction of the complex into tri-n-butyl phosphate (TBP), and the measurement of the transmittance of the solvent phase. The procedure is applicable to ore samples, filter cakes and aqueous solutions of low uranium content. The thiocyanate-TBP method has several advantages over the 'ether' method.
Author: Robert B. Kimball
Publisher:
ISBN:
Category : Spectrophotometry
Languages : en
Pages : 22
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Author: Arthur L. Henicksman
Publisher:
ISBN:
Category : Uranium
Languages : en
Pages : 42
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Author: R.A. Nagle
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ISBN:
Category :
Languages : en
Pages : 12
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Author: H. I. Feinstein
Publisher:
ISBN:
Category : Azides
Languages : en
Pages : 26
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Author: Arno H. A. Heyn
Publisher:
ISBN:
Category : Extraction (Chemistry)
Languages : en
Pages : 26
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An ultraviolet spectrophotometric method for the determination of uranium has been developed which is based on the ultraviolet absorption of the complex of uranium(VI) with tris-(2-ethylhexyl)phosphine oxide. The complex is formed by extracting uranium(VI) from an aqueous 6M sodium nitrate solution in the pH range 2.5-3.0 into 0.1M solution of tris-(2-ethylhexyl)phosphine oxide (TEHPO) in an inert diluent, cyclohexane.
Author: A. D. Hues
Publisher:
ISBN:
Category : Tungsten compounds
Languages : en
Pages : 24
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