1、Designation:C164713Standard Practice forRemoval of Uranium or Plutonium,or both,for ImpurityAssay in Uranium or Plutonium Materials1This standard is issued under the fixed designation C1647;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revi
2、sion,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 This practice covers instructions for using an extractionchromatography column method for the removal of p
3、lutoniumor uranium,or both,from liquid or digested oxides or metalsprior to impurity measurements.Quantification of impuritiescan be made by techniques such as inductively coupled plasmamass spectrometry(ICP-MS),inductively coupled plasmaatomic emission spectrometry(ICP-AES)or atomic absorptionspect
4、rometry(AAS.)1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to estab
5、lish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C753 Specification for Nuclear-Grade,Sinterable UraniumDioxide PowderC757 Specification for Nuclear-Grade Plutonium DioxidePowder,Sinterable
6、C776 Specification for Sintered Uranium Dioxide PelletsC787 Specification for Uranium Hexafluoride for Enrich-mentC788 Specification for Nuclear-Grade Uranyl Nitrate Solu-tion or CrystalsC859 Terminology Relating to Nuclear MaterialsC996 Specification for Uranium Hexafluoride Enriched toLess Than 5%
7、235UC1168 Practice for Preparation and Dissolution of PlutoniumMaterials for AnalysisC1287 Test Method for Determination of Impurities inNuclear Grade Uranium Compounds by InductivelyCoupled Plasma Mass SpectrometryC1347 Practice for Preparation and Dissolution of UraniumMaterials for AnalysisC1432
8、Test Method for Determination of Impurities inPlutonium:Acid Dissolution,Ion Exchange MatrixSeparation,and Inductively Coupled Plasma-AtomicEmission Spectroscopic(ICP/AES)AnalysisC1517 Test Method for Determination of Metallic Impuritiesin Uranium Metal or Compounds by DC-Arc EmissionSpectroscopyD11
9、93 Specification for Reagent Water3.Terminology3.1 For definitions of terms used in this test method but notdefined herein,refer to Terminology C859.4.Summary of Practice4.1 An aliquot of liquid sample or dissolved solid sample isadjusted as needed to 8M nitric acid for plutonium/uraniumremoval usin
10、g extraction chromatography.Uranium and pluto-nium are retained on the resin and trace impurities are collectedin the column effluent.The impurities can be measured by avariety of techniques.5.Significance and Use5.1 This practice can be used to separate uranium orplutonium,or both,prior to the impu
11、rity analysis by varioustechniques.The removal of uranium and plutonium prior toquantification can improve the detection limits by minimizingthe signal suppression caused by uranium or plutonium whenusing ICP techniques.Detection limits of 110 part-per-billion(PPB)may be obtainable by matrix removal
12、.Also,removal of the uranium and plutonium may allow the impuri-ties analysis to be performed on a non-glove box enclosedinstrument.5.2 Other test methods exist to determine impurities inuranium or plutonium.Test Method C1517 is able to determinemany impurities in uranium at detection levels of 1101
13、This practice is under the jurisdiction of ASTM Committee C26 on NuclearFuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods ofTest.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 2006.Last previous edition approved in 2006 as C1647 06.DOI:10
14、.1520/C1647-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,
15、PO Box C700,West Conshohocken,PA 19428-2959.United States1 part-per-million(ppm)by DC-Arc Spectrometry.Test MethodC1287 is able to determine impurities in uranium at detectionlevels of 100 ppb by ICP-MS.Test Method C1432 providesan alternative technique to remove plutonium by ion exchangeprior to an
16、alysis of the impurities by ICP-AES.5.3 This practice can be used to demonstrate compliancewith nuclear fuel specifications,for example,SpecificationsC753,C757,C776,C787,C788,and C996.6.Interferences6.1 Zirconium,hafnium,niobium,and tantalum are retainedon the diamyl,amylphosphonate resin unless hydrofluoric acidis added to the nitric acid load/rinse solution.The addition ofhydrofluoric acid to recover zirconium,hafnium,niobium,andtantalum reduces uranium and plutonium retention.For thisreason,h
