Determination of Americium in a Nitric Acid Medium Using Second-Order Derivative Spectrophotometry

Toshiaki Hiyama, Shinichi Sugaya, Tomio Kageyama, Katsuichiro Kamimura

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Abstract

A second-order derivative spectrophotometric method has been developed for the determination of microgram quantities of trivalent americium in a nitric acid medium containing plutonium and uranium. The second-order derivative absorbance of the americium at 503.5 nm is used for the quantitative analysis. In the determination of 5.8 μg/ml and 3.9 μg/ml of americium, the presence of a 100-fold amount of plutonium and a 600-fold amount of uranium could be tolerated, respectively. The trivalent americium. in the concentration range of 1 - 11 μg/ml has been determined with good precision. The detection limit was 0.3 μg/ml at 3 times the standard deviation (3σ). The relative standard deviation was less than 2.1% for a sample of uranium-plutonium mixed oxide. The proposed method does not require the complicated separation step of plutonium and uranium.

Original languageEnglish
Pages (from-to)427-430
Number of pages4
Journalanalytical sciences
Volume12
Issue number3
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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