1.1 本试验方法涵盖钚（Pu）材料中微量元素的测定，如钚金属、钚氧化物和钚/铀（U）混合氧化物。将Pu样品溶解在酸中，并通过电感耦合等离子体质谱（ICP-MS）测定微量杂质的浓度。 1.2 本试验方法专门用于测定痕量杂质，其中样品溶解，氧化状态调整为Pu（IV）和U（VI）状态（如适用）。它可以应用于其他矩阵；然而，用户有责任评估其他矩阵的性能。 1.3 四极ICP-MS或高分辨率ICP-MS（HR-ICP-MS）可用于与本试验方法相关的所有应用。HR-ICP-MS在许多情况下是一种更好的选择，因为它可以减少或潜在地消除在以下复杂样品基质中遇到的干扰。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本试验方法可与试验方法一起运行 C1432 分析聚氨酯金属中的微量杂质。 使用本试验方法中描述的技术和试验方法中描述的技术 C1432 将为分析员提供更彻底的Pu金属样品中杂质浓度验证。此外，试验方法 C1432 可用于测定未使用本试验方法测定的Ca、Fe、Na和Si等分析物的杂质浓度。 5.2 本试验方法可用于硝酸盐溶液中的聚氨酯基质。 5.3 本试验方法已验证可用于符合规范中所述规范的材料 C757 和试验方法 C758 和 C759 . 5.4 本试验方法已针对表4.1.1.1.1中列出的所有元素进行了验证 表1 . （A） 没有离奇的价值。

1.1 This test method covers the determination of trace elements in plutonium (Pu) materials such as Pu metal, Pu oxides, and Pu/uranium (U) mixed oxides. The Pu sample is dissolved in acid, and the concentration of the trace impurities are determined by Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS). 1.2 This test method is specific for the determination of trace impurities where the samples are dissolved and the oxidation state is adjusted to the Pu(IV) and, if applicable, the U(VI) state. It may be applied to other matrices; however, it is the responsibility of the user to evaluate the performance of other matrices. 1.3 The use of a quadrupole ICP-MS or a high resolution ICP-MS (HR-ICP-MS) can be employed in all applications relevant to this test method. HR-ICP-MS is a better option in many cases since it can reduce or potentially eliminate interferences encountered in the following complex sample matrices. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method may be run together with Test Method C1432 to analyze for trace impurities in Pu metal. Using the technique described in this test method and the technique described in Test Method C1432 will provide the analyst with a more thorough verification of the impurity concentrations contained in the Pu metal sample. In addition, Test Method C1432 can be used to determine impurity concentrations for analytes such as Ca, Fe, Na, and Si, which have not been determined using this test method. 5.2 This test method can be used on Pu matrices in nitrate solutions. 5.3 This test method has been validated for use on materials that meet the specifications described in Specification C757 and Test Methods C758 and C759 . 5.4 This test method has been validated for all elements listed in Table 1 . (A) Without outlying value.