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【英文标准名称】:StandardPracticeforSeparationandConcentrationofIgnitableLiquidResiduesfromFireDebrisSamplesbyPassiveHeadspaceConcentrationwithSolidPhaseMicroextraction(SPME)
【原文标准名称】:用带有固相微量萃取(SPME)的无源液上浓缩法对燃烧废墟样品中易燃液体残留物进行分离和浓缩的标准实施规程
【标准号】:ASTME2154-2001(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E30.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:firedebrissamples;passiveheadspaceconcentration;solidphasemicroextraction(SPME);Concentration(ofelements);Firedebrissamples;Gaschromatography(GC);Ignitableliquidresidues;Passiveheadspaceanalysis;Residue;Separationprocessing/an
【摘要】:Thispracticeissuitedideallyforscreeningsamplesforthepresence,relativeconcentration,andpotentialclassofignitableliquidresiduesinfiredebris.Thisisaverysensitiveseparationprocedure,capableofisolatingsmallquantitiesofignitableliquidresiduesfromasample,thatis,a0.1x03BC;Lspikeofgasolineonacellulosewipeinsideofa1-galcanisdetectable.Actualrecoverywillvary,dependingonseveralfactors,includingadsorptiontemperature,containersize,competitionfromthesamplematrix,ignitableliquidclassandrelativeignitableliquidconcentration.Becausethisseparationtakesplaceinaclosedcontainer,thesampleremainsinapproximatelythesameconditioninwhichitwassubmitted.Repeatandinterlaboratoryanalyses,therefore,maybepossible.Sincetheextractionisnonexhaustive,thetechniquepermitsreanalysisofsamples.ThispracticeisintendedforuseinconjunctionwithotherextractiontechniquesdescribedinPracticesE1385,E1386,E1388,E1412,andE1413.Theextractisconsumedintheanalysis.Ifamorepermanentextractisdesired,oneoftheseparationpracticesdescribedinPracticesE1385,E1386,E1412,orE1413shouldbeused.1.1Thispracticedescribestheprocedureforremovingsmallquantitiesofignitableliquidresiduesfromsamplesoffiredebris.Anadsorbentmaterialisusedtoextracttheresiduefromthestaticheadspaceabovethesample.Then,analytesarethermallydesorbedintheinjectionportofthegaschromatograph(GC).1.2Thispracticeisbestsuitedforscreeningfiredebrissamplestoassessrelativeignitableliquidconcentrationandforextractingignitableliquidfromaqueoussamples.1.3Thispracticeissuitableforextractingignitableliquidresidueswhenahighlevelofsensitivityisrequiredduetoaverylowconcentrationofignitableliquidresiduesinthesample.1.3.1Unlikeothermethodsofseparationandconcentration,thismethodrecoversaminimalamountoftheignitableresiduespresentintheevidence,leavingresiduesthataresuitableforsubsequentresampling.1.4AlternateseparationandconcentrationproceduresarelistedinSection2.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C80
【国际标准分类号】:27_060_10
【页数】:3P.;A4
【正文语种】:英语