Designation:D4503–86(Reapproved2003)StandardPracticeforDissolutionofSolidWastebyLithiumMetaborateFusion1ThisstandardisissuedunderthefixeddesignationD4503;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthedrying,ashing,andsolubiliza-tionofsolidwasteusingalithiummetaborate(LiBO2)fusionforthesubsequentdeterminationofinorganicconstituentsbyargonplasmaemissionspectroscopyoratomicabsorptionspectroscopy.1.2Thefollowingelementsmaybesolubilizedbythispractice:aluminumchromiumsiliconbariumirontitaniumcadmiummagnesiumvanadiumcalciummanganesezinccoppernickel1.3Thispracticehasbeenusedsuccessfullywithabauxiteoreandaneutralizedmetaltreatmentsludge.Thepracticemaybeapplicabletootherelementsnotlistedabove.Somemetals,suchascadmiumandzinc,mayvolatilizefromsomesamplesduringthedrying,ashing,orfusionsteps.Theanalystisresponsiblefordeterminingwhetherthepracticeisapplicabletothesolidwastebeingtested.1.4Thispracticeisintendedforthesolubilizationofnon-volatileinorganicconstituentsinsolidwaste.TheLiBO2fusionisappropriateforasilicatematrixoracidresistantsamples.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardstatementsseeSection7.2.ReferencedDocuments2.1ASTMStandards:D1193SpecificationforReagentWater2D2777PracticeforDeterminationofPrecisionandBiasofApplicableMethodsofCommitteeD-19onWater2D3682TestMethodforMajorandMinorElementsinCoalandCokeAshbyAtomicAbsorption3E50PracticesforApparatus,Reagents,andSafetyPrecau-tionsforChemicalAnalysisofMetals43.SummaryofPractice3.1Thesolidwasteisweighed,dried,andashedat550°Ctoremovewaterandorganicconstituents,andreweighed.Aknow...
