ASTM_C_1463_-_13.pdf

Designation:C146313Standard Practices forDissolving Glass Containing Radioactive and Mixed Wastefor Chemical and Radiochemical Analysis1This standard is issued under the fixed designation C1463;the number immediately following the designation indicates the year oforiginal adoption 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 practices cover techniques suitable for dissolvingglass samples that may contain nuclear wastes.These tech-niques used together or independently will produce solutionsthat can be analyzed by inductively coupled plasma atomicemission spectroscopy(ICP-AES),inductively coupled plasmamass spectrometry(ICP-MS),atomic absorption spectrometry(AAS),radiochemical methods and wet chemical techniquesfor major components,minor components and radionuclides.1.2 One of the fusion practices and the microwave practicecan be used in hot cells and shielded hoods after modificationto meet local operational requirements.1.3 The user of these practices must follow radiation pro-tection guidelines in place for their specific laboratories.1.4 Additional information relating to safety is included inthe text.1.5 The dissolution techniques described in these practicescan be used for quality control of the feed materials and theproduct of plants vitrifying nuclear waste materials in glass.1.6 These practices are introduced to provide the user withan alternative means to Test Methods C169 for dissolution ofwaste containing glass in shielded facilities.Test MethodsC169 is not practical for use in such facilities and withradioactive materials.1.7 The ICP-AES methods in Test Methods C1109 andC1111 can be used to analyze the dissolved sample withadditional sample preparation as necessary and with matrixeffect considerations.Additional information as to other ana-lytical methods can be found in Test Method C169.1.8 Solutions from this practice may be suitable for analysisusing ICP-MS after establishing laboratory performance crite-ria.1.9 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.10 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 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 Sections 10,20,and 30.2.Referenced Documents2.1 ASTM Standards:2C169 Test Methods for Chemical Analysis of Soda-Limeand Borosilicate GlassC859 Terminology Relating to Nuclear MaterialsC1109 Practice for Analysis of Aqueous Leachates fromNuclear Waste Materials Using Inductively CoupledPlasma-Atomic Emission SpectroscopyC1111 Test Method for Determining Elements in WasteStreams by Inductively Coupled Plasma-Atomic EmissionSpectroscopyC1220 Test Method for Static Leaching of Monolithic WasteForms for Disposal of Radioactive WasteC1285 Test Methods for Determining Chemical Durabilityof Nuclear,Hazardous,and Mixed Waste Glasses andMultiphase Glass Ceramics:The Product Consistency Test(PCT)D1193 Specification for Reagent WaterE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 For definitions of terms used in this Practice,refer toTerminology C859.4.Summary of Practice4.1 The three practices for dissolving silicate matrixsamples each require the sample to be dried and ground to afine powder.1These practices are under the jurisdiction ofASTM Committee C26 on NuclearFuel Cycle and are the direct responsibility of Subcommittee C26.05 on Methods ofTest.Current edition approved July 1,2013.Published July 2013.Originally approvedin 2000.Last previous edition approved in 2007 as C1463 00(2007).DOI:10.1520/C1463-13.2For 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,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 In the first practice,a mixture of sodium tetraborate(Na2B4O7)and sodium carbonate(Na2CO3)is mixed with thesample and fused in a muffle for 25 min at 950C.The sampleis cooled,dissolved in hydrochloric acid,and diluted toappropriate volume for analyses.4.3 The second practice described in this standard involvesfusion of the sample with potassium hydroxide(KOH)orsodium peroxide(Na2O2)using an electric Bunsen burner,dissolving the fused sample in water and dilute HCl,andmaking to volume for analysis.4.4 Dissolution of the sample using a microwave oven isdescribed in the third practice.The ground sample is digestedin a microwave oven using a mixture of hydrofluoric(HF)andnitric(HNO3)acids.Boric acid is adde