Simultaneous Spectrophotometric Determination of Aluminum and Iron in Uranium with 8-Hydroxyquinolinol (Oxine)
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概要
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A simultaneous spectrophotometric method for the determination of aluminum and iron in highly pure uranium is critically examined.Uranium metal is dissolved with hydrochloric acid and potassium chlorate and the solution is heated to expel chlorine and then diluted. An aliquot of the solution containing less than 0.5g of uranium is used for the analysis. Uranium is masked with either acetic acid at pH 5.5 or ammonium carbonate at pH 9.510 and oxinates of aluminum and iron are extracted with chloroform at the same time. Then, the extract is washed with suitable solution to eliminate the interfering metals. By measuring the absorbances of the extract at 390 and 470mμ, aluminum and iron are determined.The effects of many elements which are commonly contained in uranium as inpurities and the methods to eliminate their interferences are described in detail. By this method, the lower limits of determination are about 2ppm for aluminum and 5ppm for iron.
- 一般社団法人 日本原子力学会の論文
一般社団法人 日本原子力学会 | 論文
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