ASTMB260087W075751000262LI6ä-73-CS5AnAmericanNationalStandardAMERICANSOCIETYFORTESTINGANDMATERIALS([TbDesignation:D2600-871916RaceSt.,Philadelphia,Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedInthecurrentcombinedindex,willappearinthenextedition.@Designation:262/85StandardTestMethodforAromaticTracesinLightSaturatedHydrocarbonsByGasChromatography'ThisstandardisissuedunderthefixeddesignationD2600,thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(€1indicatesaneditorialchangesincethelastrevisionorreapproval.ThistestmethodwasadoptedasajointASTM-IPStandardin1971.1.Scope1.1Thistestmethodcoversthedeterminationofbenzene,toluene,andC8aromaticsinlightsaturatedhydrocarbonsamples.Thetestmethodislimitedbyaromaticselectivityofthestationaryliquidtosamplescontainingn-decaneasthehighestboilingcompound.NOTE1-SomeoftheC,onaphtheneshaveboilingpointsbelowthatofn-decane.Suchcompoundsmaybeelutedaftern-decaneonthecolumnsdescribedinthismethodandmaycauseinterferencewiththedeterminationofbenzene.1.2Thistestmethodcoverstheconcentrationrangefrom0.005to1.00volumepercentofeachC6toC8aromaticcarbonnumbergroup.1.3Resultsarereportedtotwosignificantfigures.1.4Thisstandardmayinvolvehazardousmaterials,oper-ations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.IASTMStandards:D2267TestMethodforAromaticsinLightNaphthas,ReformatesandGasolinesbyGasChromatography2E260PracticeforPackedColumnGasChromatography33.SummaryofTestMethod3.1Thesampleisintroducedintoagaschromatographiccolumncontainingastronglypolarliquidphase.Thepolarphasehasverylittleaffinityforsaturatedandolefinichydrocarbons,whileexhibitingapronouncedselectivity...
