1、Designation:C79912Standard Test Methods forChemical,Mass Spectrometric,Spectrochemical,Nuclear,and Radiochemical Analysis of Nuclear-Grade Uranyl NitrateSolutions1This standard is issued under the fixed designation C799;the number immediately following the designation indicates the year oforiginal a
2、doption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover procedures for the chemical,mass spectrometric,spec
3、trochemical,nuclear,and radiochemi-cal analysis of nuclear-grade uranyl nitrate solution to deter-mine compliance with specifications.1.2 The analytical procedures appear in the following order:SectionsDetermination of Uranium7Specific Gravity by Pycnometry15 20Free Acid by Oxalate Complexation21 27
4、Determination of Thorium28Determination of Chromium29Determination of Molybdenum30Halogens Separation by Steam Distillation31 35Fluoride by Specific Ion Electrode36 42Halogen Distillate Analysis:Chloride,Bromide,and Iodide byAmperometric Microtitrimetry43Determination of Chloride and Bromide44Determ
5、ination of Sulfur by X-Ray Fluorescence45Sulfate Sulfur by(Photometric)Turbidimetry46Phosphorus by the Molybdenum Blue(Photometric)Method54 61Silicon by the Molybdenum Blue(Photometric)Method62 69Carbon by Persulfate Oxidation-Acid Titrimetry70Conversion to U3O871 74Boron by Emission Spectrography75
6、 81Impurity Elements by Spark Source Mass Spectrography82Isotopic Composition by Thermal Ionization Mass Spectrometry83Uranium-232 by Alpha Spectrometry84 90Total Alpha Activity by Direct Alpha Counting91 97Fission Product Activity by Beta Counting98 104Entrained Organic Matter by Infrared Spectroph
7、otometry105Fission Product Activity by Gamma Counting106Determination of Arsenic107Determination of Impurities for the EBC Calculation108Determination of Technetium 99109Determination of Plutonium and Neptunium1101.3 This standard does not purport to address all of thesafety concerns,if any,associat
8、ed with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific precau-tionary statements are given in Section 5.2.Referenced Documents2.1 ASTM Standards:2C696
9、Test Methods for Chemical,Mass Spectrometric,andSpectrochemical Analysis of Nuclear-Grade Uranium Di-oxide Powders and PelletsC761 Test Methods for Chemical,Mass Spectrometric,Spectrochemical,Nuclear,and Radiochemical Analysis ofUranium HexafluorideC788 Specification for Nuclear-Grade Uranyl Nitrate
10、 Solu-tion or CrystalsC1219 Test Methods for Arsenic in Uranium Hexafluoride(Withdrawn 2015)3C1233 Practice for Determining Equivalent Boron Contentsof Nuclear MaterialsC1254 Test Method for Determination of Uranium in Min-eral Acids by X-Ray FluorescenceC1267 Test Method for Uranium by Iron(II)Redu
11、ction inPhosphoric Acid Followed by Chromium(VI)Titration inthe Presence of VanadiumC1287 Test Method for Determination of Impurities inNuclear Grade Uranium Compounds by InductivelyCoupled Plasma Mass SpectrometryC1295 Test Method for Gamma Energy Emission fromFission and Decay Products in Uranium
12、Hexafluoride andUranyl Nitrate SolutionC1296 Test Method for Determination of Sulfur in UraniumOxides and Uranyl Nitrate Solutions by X-Ray Fluores-cence(XRF)(Withdrawn 2007)3C1380 Test Method for the Determination of Uranium Con-tent and Isotopic Composition by Isotope Dilution MassSpectrometryC141
13、3 Test Method for Isotopic Analysis of HydrolyzedUranium Hexafluoride and Uranyl Nitrate Solutions byThermal Ionization Mass Spectrometry1These test methods are under the jurisdiction of ASTM Committee C26 onNuclear Fuel Cycle and are the direct responsibility of Subcommittee C26.05 onMethods of Tes
14、t.Current edition approved Jan.1,2012.Published February 2012.Originallyapproved in 1975.Last previous edition approved in 2005 as C799 99(2005).DOI:10.1520/C0799-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book
15、of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 C1561
16、Guide for Determination of Plutonium and Neptu-nium in Uranium Hexafluoride and U-Rich Matrix byAlpha SpectrometryD1193 Specification for Reagent WaterE12 Terminology Relating to Density and Specific Gravityof Solids,Liquids,and Gases(Withdrawn 1996)3E60 Practice for Analysis of Metals,Ores,and RelatedMaterials by Spectrophotometry2.2 American Chemical Society Specification:Reagent Chemicals42.3 Other Documents:ISO 7097 Determination of Uranium in Uranium ProductSolutions and Solids with Cerium
