Designation:E2154−15aStandardPracticeforSeparationandConcentrationofIgnitableLiquidResiduesfromFireDebrisSamplesbyPassiveHeadspaceConcentrationwithSolidPhaseMicroextraction(SPME)1ThisstandardisissuedunderthefixeddesignationE2154;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribestheprocedureforremovingsmallquantitiesofignitableliquidresiduesfromsamplesoffiredebris.Anadsorbentmaterialisusedtoextracttheresiduefromthestaticheadspaceabovethesample.Then,analytesarethermallydesorbedintheinjectionportofthegaschromato-graph(GC).1.2Thispracticeisbestsuitedforscreeningfiredebrissamplestoassessrelativeignitableliquidconcentrationandforextractingignitableliquidfromaqueoussamples.1.3Thispracticeissuitableforextractingignitableliquidresidueswhenahighlevelofsensitivityisrequiredduetoaverylowconcentrationofignitableliquidresiduesinthesample.1.3.1Unlikeothermethodsofseparationandconcentration,thismethodrecoversaminimalamountoftheignitableresiduespresentintheevidence,leavingresiduesthataresuitableforsubsequentresampling.1.4AlternateseparationandconcentrationproceduresarelistedinSection2.1.5Thisstandardcannotreplaceknowledge,skill,orabilityacquiredthroughappropriateeducation,training,andexperi-enceandshouldbeusedinconjunctionwithsoundprofes-sionaljudgment.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E1386PracticeforSeparationofIgnitableLiquidResiduesfromFireDebrisSamplesbySolventExtractionE1388PracticeforSamplingofHeadspaceVaporsfromFireDebrisSamplesE1412PracticeforSeparationofIgnitableLiquidResiduesfromFireDebrisSam...
