AMERICANNATIONALANSI/ASTMD2785-80STANDARDAMERICANSOCIETVFORTESTINGANDMATERIALS1916RaceSt.,Phtladelphla,Pa.19103AeprlntadfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedinde><,willappearinthenextedition.StandardTestMethodforTRACEQUANTITIESOFTOTALSULFUR(WICKBOLDANDBECKMANCOMBUSTIONAPPARATUS)1ThisstandardisissuedunderthefiiieddesignationD27l!S:1henumberimmcdia1elyrollowi11gthedcsignalionindicalu1heyearoronginaladoptionor.inthecaseofrevision.theyearorlas1revision.Anumberinparcn1hcsesindicatesCheyearoflastreapproval.1.ScopeI.IThismethodcoversthedeterminationoftotalsulfurprimarilyintherangefrom2to25ppminvolatile,normallyliquidorganicmate-rials(NoteI).Themethodmaybeextendedloliquidmaterialswithhighersulfurconcentra-tionandtoviscousliquidsandsolidsbyusingappropriate.solvents.Samplesshouldnotcon-tainmorethanI00ppmofhalogens.2ppmofbarium.or0.1ppmofleadorappreciableash-formingsubstances.NOTEI-ForthedeterminationoftotalsulfurinliquefiedpetroleumgasessecASTMMethod02784.TestforSulfurinLiquefiedPetroleumGases(Oxy-HydrogenBurnerorLamp).2Non:2-Toanainthequantitativedetectability.thatthemethodiscapableof,stringenttechniquesmustbeemployedandallpossiblesourcesofsulfurcontaminationmustbeeliminated.Jnparticular,cleaningagents.suchascommonhouseholddeter-gentswhichcontainsulfates.shouldbeavoided.2.ApplicableDocuments2.1ASTMStandards.D156TestforSayboltColorofPetroleumProducts(SaybollChromcterMethod)tD270-API2546SamplingPetroleumandPetroleumProducts:..D1266SulfurinPetroleumProducts(LampMethod}2D2784SulfurinLiquefiedPetroleumGases(Oxy~HydrogenBurnerorLampfElISpecificationforWire-ClothSievesforTestingPurposes43.SummaryofMethod3.IThesampleisburnedinanoxy-hydro-genatomizerburner.Theoxidesofsulfurareabsorbedandoxidizedlosulfuricacidinahydrogenperoxidesolution.Thesulfateionsaredeterminedthenbyeitherofthefollowingfinishes:3.1.1BariumPerchloraJeTitration-Thesul-fateistitratedwithbariumperchlorateusingalhorin-methylenebluemixedindicator.3.1.2Turbidimetric-Thesulfateisp...
