ASTM-C1432 › Standard Test Method for Determination of Impurities in Plutonium: Acid Dissolution, Ion Exchange Matrix Separation, and Inductively Coupled Plasma-Atomic Emission Spectroscopic (ICP/AES) Analysis
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1.1 This test method covers the determination of 25 elements in plutonium (Pu) materials. The Pu is dissolved in acid, the Pu matrix is separated from the target impurities by an ion exchange separation, and the concentrations of the impurities are determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES).
1.2 This test method is specific for the determination of impurities in 8 M HNO3 solutions. Impurities in other plutonium materials, including plutonium oxide samples, may be determined if they are appropriately dissolved (see Practice ) and converted to 8 M HNO3 solutions.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
5.1 This test method can be used on plutonium matrices in nitrate solutions.
5.2 This test method has been validated for all elements listed in Test Methods except sulfur (S) and tantalum (Ta).
5.3 This test method has been validated for all of the cation elements measured in . Phosphorus (P) requires a vacuum or an inert gas purged optical path instrument.
dissolution; inductively coupled plasma-atomic emission spectroscopy (ICP-AES); impurities in plutonium; ion exchange separation; plutonium;; ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)
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July 15, 2015