1.1 这些试验方法包括核级硝酸钚溶液的化学、质谱、光谱化学、核和放射化学分析程序，以确定是否符合规范。 1.2 分析程序按以下顺序出现: 小节 控制电位库仑法测定钚 2. 铁安培滴定法测定钚（II） 2. 二极管阵列分光光度法测定钚 在草酸盐溶液中滴定游离酸 8. 到 15 碘酸盐沉淀电位滴定法测定游离酸 试验方法 16 到 22 偶氮胂Ⅰ分光光度法测定铀 23 到 33 钍分光光度法测定钍 34 到 42 铁1,10- 邻菲罗啉分光光度试验方法 43 到 50 ICP-AES法测定杂质 硫氰酸盐分光光度法测定氯化物 51 到 58 蒸馏分光光度法测定氟化物 59 到 66 硫酸钡浊度法测定硫酸盐 67 到 74 质谱法测定同位素组成 75 到 76 α光谱法测定钚-238同位素丰度 萃取和γ计数法测定镅-241 77 到 85 γ计数镅-241 86 到 94 伽马射线能谱法测定γ辐射裂变产物、铀和钍 94 到 102 稀土铜火花光谱化学试验方法 103 到 105 光谱法测定钨、铌（铌）和钽- 化学试验方法 106 到 114 通用光谱分析的样品制备 杂质 115 到 118 1.3 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.4 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。 有关具体的安全保障和安全隐患说明，请参阅第节 6. . 1.5 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====== 4.1 这些测试方法旨在显示给定材料是否符合买方规范。 4.1.1 进行分析以确定材料是否具有规定的钚含量。 4.1.2 测定硝酸钚溶液中钚的同位素含量，以确定有效裂变含量是否符合买方规范。 4.1.3 杂质含量通过多种方法确定，以确保不超过规定杂质的最大浓度限制。计算等效硼含量（EBC）时也需要测定杂质。 4.2 保障措施和核安全应用的适用性- 用于保障和核安全应用的方法应符合指南规定的要求 C1068 用于此类应用。

1.1 These test methods cover procedures for the chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of nuclear-grade plutonium nitrate solutions to determine compliance with specifications. 1.2 The analytical procedures appear in the following order: Sections Plutonium by Controlled-Potential Coulometry 2 Plutonium by Amperometric Titration with Iron(II) 2 Plutonium by Diode Array Spectrophotometry Free Acid by Titration in an Oxalate Solution 8 to 15 Free Acid by Iodate Precipitation-Potentiometric Titration Test Method 16 to 22 Uranium by Arsenazo I Spectrophotometric Test Method 23 to 33 Thorium by Thorin Spectrophotometric Test Method 34 to 42 Iron by 1,10-Phenanthroline Spectrophotometric Test Method 43 to 50 Impurities by ICP-AES Chloride by Thiocyanate Spectrophotometric Test Method 51 to 58 Fluoride by Distillation-Spectrophotometric Test Method 59 to 66 Sulfate by Barium Sulfate Turbidimetric Test Method 67 to 74 Isotopic Composition by Mass Spectrometry 75 to 76 Plutonium-238 Isotopic Abundance by Alpha Spectrometry Americium-241 by Extraction and Gamma Counting 77 to 85 Americium-241 by Gamma Counting 86 to 94 Gamma-Emitting Fission Products, Uranium, and Thorium by Gamma-Ray Spectroscopy 94 to 102 Rare Earths by Copper Spark Spectrochemical Test Method 103 to 105 Tungsten, Niobium (Columbium), and Tantalum by Spectro- chemical Test Method 106 to 114 Sample Preparation for Spectrographic Analysis for General Impurities 115 to 118 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific safeguard and safety hazard statements, see Section 6 . 1.5 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 ====== 4.1 These test methods are designed to show whether a given material meets the purchaser's specifications. 4.1.1 An assay is performed to determine whether the material has the specified plutonium content. 4.1.2 Determination of the isotopic content of the plutonium in the plutonium-nitrate solution is made to establish whether the effective fissile content is in compliance with the purchaser's specifications. 4.1.3 Impurity content is determined by a variety of methods to ensure that the maximum concentration limit of specified impurities is not exceeded. Determination of impurities is also required for calculation of the equivalent boron content (EBC). 4.2 Fitness for Purpose of Safeguards and Nuclear Safety Applications— Methods intended for use in safeguards and nuclear safety applications shall meet the requirements specified by Guide C1068 for use in such applications.