Designation:E1413−13StandardPracticeforSeparationofIgnitableLiquidResiduesfromFireDebrisSamplesbyDynamicHeadspaceConcentration1ThisstandardisissuedunderthefixeddesignationE1413;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribestheprocedureforseparationofsmallquantitiesofignitableliquidresiduesfromfiredebrissamplesusingthemethodofdynamicheadspaceconcentra-tion.1.2Dynamicheadspaceconcentrationusesadsorptionandsubsequentsolventelutionorthermaldesorption.1.3Bothpositiveandnegativepressuresystemsforadsorp-tionaredescribed,aswellasathermaldesorptionsystem.1.4Whilethispracticeissuitableforsuccessfullyextractingignitableliquidresiduesovertheentirerangeofconcentration,theheadspaceconcentrationmethodsarebestusedwhenahighlevelofsensitivityisrequiredduetoaverylowconcentrationofignitableliquidresiduesinthesample.1.5AlternateseparationandconcentrationproceduresarelistedinSection2.Ifarchivaloftheextractisofimportance,thenthispractice’sthermaldesorptionprocedure,SPME(Prac-ticeE2154),andheadspace(PracticeE1388)sampleseparationtechniquesarenotrecommendedunlessaportionoftheextractcanbesplitandretained.Inordertohaveanarchivableextract,thenthispractice’ssamplecollectiononcharcoal,solventextraction(PracticeE1386),orpassiveheadspaceconcentra-tion(PracticeE1412)isrecommended.1.6Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Thisstandardcannotreplaceknowledge,skill,orabilityacquiredthroughappropriateeducation,training,andexperienceandshouldbeusedinconjunctionwithsoundprofessionaljudgment.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriorto...
