Designation:E1726−16StandardPracticeforPreparationofSoilSamplesbyHotplateDigestionforSubsequentLeadAnalysis1ThisstandardisissuedunderthefixeddesignationE1726;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversdrying,homogenization,andaciddigestionofsoilsamplesandassociatedqualitycontrol(QC)samplesusingahotplatetypemethodforthedeterminationofleadusinglaboratoryatomicspectrometryanalysistechniquessuchasInductivelyCoupledPlasmaAtomicEmissionSpec-trometry(ICP-AES),FlameAtomicAbsorptionSpectrometry(FAAS),andGraphiteFurnaceAtomicAbsorptionSpectrom-etry(GFAAS).1.2ThispracticeisbasedonU.S.EPASW846,TestMethod3050.1.3Thispracticecontainsnotesthatareexplanatoryandarenotpartofthemandatoryrequirementsofthisstandard.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterE288SpecificationforLaboratoryGlassVolumetricFlasksE1605TerminologyRelatingtoLeadinBuildings2.2U.S.GovernmentAnalyticalMethod:3U.S.EPASW846TestMethodsforEvaluatingSolidWastePhysical/ChemicalMethods2.3ISOStandards:4ISOGuide30TermsandDefinitionsUsedinConnectionwithReferenceMaterialsISO1042Laboratoryglassware—One-markvolumetricflasksISO8655Piston-operatedvolumetricapparatus--Part1:Terminology,generalrequirementsanduserrecommen-dations3.Terminology3.1Definitions:Fordefinitionsoftermsrelatingtothepreparationofdriedpain...
