ASTM C761-2018 六氟化铀化学分析、质谱分析、光谱化学分析、核分析及放射化学分析方法 Standard Test Methods for Chemical,Mass Spectrometric,Spectrochemical,Nuclear,and Radiochemical Analysis of Uranium Hexafluoride

1.1 These test methods cover or give reference to procedures for subsampling and for chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of uranium hexafluoride (UF6). Most of these test methods are in routine use to determine conformance to UF6 specifications in the Enrichment and Conversion Facilities. 1.2 The analytical procedures in this document appear in the following order: Note 1: Subcommittee C26.05 will confer with C26.02 concerning the renumbered section in Test Methods C761 to determine how concerns with renumbering these sections are best addressed in subsequent publications as analytical methods are replaced with stand-alone analytical methods.   Sections Subsampling of Uranium Hexafluoride 8 Gravimetric Determination of Uranium 9 – 17 Titrimetric Determination of Uranium 18 Preparation of High-Purity U3O8 19 Isotopic Analysis 20 Determination of Hydrocarbons, Chlorocarbons, and Partially Substituted Halohydrocarbons 21 – 27 Determination of Antimony 28 Determination of Bromine 29 Determination of Chlorine 30 – 36 Determination of Silicon and Phosphorus 37 – 43 Determination of Boron and Silicon 44 Determination of Ruthenium 45 Determination of Titanium and Vanadium 46 Spectrographic Determination of Metallic Impurities 47 Determination of Tungsten 48 Determination of Thorium and Rare Earths 49 Determination of Molybdenum 50 Atomic Absorption Determination of Metallic Impurities 51 – 56 Impurity Determination by Spark-Source Mass Spectrography 57 Determination of Boron-Equivalent Neutron Cross Section 58 Determination of Uranium-233 Abundance by Thermal Ionization Mass Spectrometry 59 Determination of Uranium-232 by Alpha Spectrometry 60 – 66 Determination of Fission Product Activity 67 Determination of P