Designation:D2784−11StandardTestMethodforSulfurinLiquefiedPetroleumGases(Oxy-HydrogenBurnerorLamp)1ThisstandardisissuedunderthefixeddesignationD2784;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftotalsulfurinliquefiedpetroleumgasescontainingmorethan1µg/g.Specimensshouldnotcontainmorethan100µg/gofhalogens.1.2Toattainthequantitativedetectabilitythatthetestmethodiscapableof,stringenttechniquesmustbeemployedandallpossiblesourcesofsulfurcontaminationmustbeeliminated.Inparticular,cleaningagents,suchascommonhouseholddetergentswhichcontainsulfates,shouldbeavoided.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D156TestMethodforSayboltColorofPetroleumProducts(SayboltChromometerMethod)D1193SpecificationforReagentWaterD1265PracticeforSamplingLiquefiedPetroleum(LP)Gases,ManualMethodD1266TestMethodforSulfurinPetroleumProducts(LampMethod)D1657TestMethodforDensityorRelativeDensityofLightHydrocarbonsbyPressureHydrometerE11SpecificationforWovenWireTestSieveClothandTestSieves2.2EnergyInstituteStandard:3IP181SamplingPetroleumGases,IncludingLiquefiedPetroleumGases3.SummaryofTestMethod3.1Thesampleisburnedinanoxy-hydrogenburner,orinalampinaclosedsysteminacarbondioxide-oxygenatmosphere.Thelatterisnotrecommendedfortracequantitiesofsulfurduetotheinordinatelylongcombustiontimesneeded.Theoxidesofsulfurareabsorbedandoxidizedtosulfuricacidinahydrogenperoxidesolution.Thesulfateionsarethendeterminedbyeither...
