Designation:D6228−19StandardTestMethodforDeterminationofSulfurCompoundsinNaturalGasandGaseousFuelsbyGasChromatographyandFlamePhotometricDetection1ThisstandardisissuedunderthefixeddesignationD6228;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofindividualvolatilesulfur-containingcompoundsingaseousfuelsbygaschromatography(GC)withaflamephotometricdetector(FPD)orapulsedflamephotometricdetector(PFPD).Thedetectionrangeforsulfurcompoundsisfrom20to20000picograms(pg)ofsulfur.Thisisequivalentto0.02to20mg/m3or0.014to14ppmvofsulfurbasedupontheanalysisofa1mLsample.1.2ThistestmethoddescribesaGCmethodusingcapillarycolumnchromatographywitheitheranFPDorPFPD.1.3Thistestmethoddoesnotintendtoidentifyallindi-vidualsulfurspecies.Totalsulfurcontentofsamplescanbeestimatedfromthetotaloftheindividualcompoundsdeter-mined.Unknowncompoundsarecalculatedasmonosulfur-containingcompounds.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1265PracticeforSamplingLiquefiedPetroleum(LP)Gases,ManualMethodD1945TestMethodforAnalysisofNaturalGasbyGasChromatographyD3609PracticeforCali...
