Designation:D5953M−96(Reapproved2009)StandardTestMethodforDeterminationofNon-MethaneOrganicCompounds(NMOC)inAmbientAirUsingCryogenicPreconcentrationandDirectFlameIonizationDetectionMethod1ThisstandardisissuedunderthefixeddesignationD5953M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethod2coversaprocedureforsamplinganddeterminingconcentrationsofnon-methaneorganiccom-pounds(NMOC)inambient,indoor,orworkplaceatmo-spheres.1.2Thetestmethoddescribesthecollectionofcumulativesamplesinpassivatedstainlesssteelcanistersandsubsequentlaboratoryanalysis.1.2.1Thistestmethoddescribesaprocedureforsamplingincanistersatfinalpressuresaboveatmosphericpressure(re-ferredtoaspressurizedsampling).1.3Thistestmethodemploysacryogenictrappingproce-dureforconcentrationoftheNMOCpriortoanalysis.1.4ThistestmethoddescribesthedeterminationoftheNMOCbythesimpleflameionizationdetector(FID),withoutthegaschromatographiccolumnsandcomplexproceduresnecessaryforspeciesseparation.1.5Therangeofthistestmethodisfrom20to10000ppbC(1,2).3Seeforproceduresforloweringtherange.1.6Thetestmethodmayyieldlessaccurateresultsforsomehalogenatedoroxygenatedhydrocarbonsemittedfromnearbysourcesofindustrialairpollutants.Thisisespeciallytrueiftherearehighconcentrationsofchlorocarbonsorchlorofluo-rocarbonspresent.1.7ThevaluesstatedinSIunitsareregardedasstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:4D1193SpecificationforReagentWaterD1356TerminologyRelatingtoSamplingandAnalysisofAtmospheresD1357PracticeforPlanningtheSamplingoftheAmbientAtmosphereD5466TestMethodforDe...
