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Spectrophotometric Determination of Plutonium with Chlorophosphonazo III in N-pentanol

Spectrophotometric Determination of Plutonium with Chlorophosphonazo III in N-pentanol
Author: N. M. Saponara
Publisher:
Total Pages: 10
Release: 1982
Genre: Actinide elements
ISBN:
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Microgram amounts of plutonium are measured spectrophotometrically as the plutonium-chlorophosphonazo III complex after extraction into n-pentanol from 1.5M HCl. The relative standard deviation is 1.5% for the range of 2.5 to 17.5 [mu]g. The tolerance is excellent for many metals and nonmetals present in nuclear fuel-cycle materials. A preceding anion-exchange-column separation increases tolerance for certain metals and nonmetals.

Spectrophotometric Determination of Plutonium-239 Based on the Spectrum of Plutonium(III) Chloride

Spectrophotometric Determination of Plutonium-239 Based on the Spectrum of Plutonium(III) Chloride
Author:
Publisher:
Total Pages: 13
Release: 1994
Genre:
ISBN:
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This report describes a spectrophotometric method for determining plutonium-239 (Pu-239) based on the spectrum of Pu(III) chloride. The authors used the sealed-reflux technique for the dissolution of plutonium oxide with hydrochloric acid (HCl) and small amounts of nitric and hydrofluoric acids. To complex the fluoride, they added zirconium, and to reduce plutonium to Pu(III), they added ascorbic acid. They then adjusted the solution to a concentration of 2 M HCl and measured the absorbances at five wavelengths of the Pu(III) chloride spectrum. This spectrophotometric determination can also be applied to samples of plutonium metal dissolved in HCl.