Designation:D6212–99StandardTestMethodforTotalSulfurinAromaticCompoundsbyHydrogenolysisandRateometricColorimetry1ThisstandardisissuedunderthefixeddesignationD6212;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofsulfurinaromatichydrocarbons,theirderivatives,andrelatedchemicalshavingtypicalsulfurconcentrationsfrom0.020to10mg/kg.1.2Thistestmethodmaybeextendedtohigherconcentra-tionsbydilution.1.3Thistestmethodisapplicabletoaromatichydrocarbonsandrelatedchemicalssuchasbenzene,toluene,cumene,p-xylene,o-xylene,andtocyclohexane.1.4Thefollowingappliestoallspecifiedlimitsinthistestmethod:forpurposesofdeterminingconformancewiththisstandard,anobservedvalueoracalculatedvalueshallberoundedofftothenearestunitinthelastright-handdigitusedforexpressingthespecificationlimitinaccordancewiththerounding-offmethodofPracticeE29.1.5Thisstandarddoesnotpurporttoaddressallthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin6.4,7.5,7.7,and8.1.2.ReferencedDocuments2.1ASTMStandards:D1193SpecificationforReagentWater2D3437PracticeforSamplingandHandlingLiquidCyclicProducts3D4045TestMethodforSulfurinPetroleumProductsbyHydrogenolysisandRateometricColorimetry4D4052TestMethodforDensityandRelativeDensityofLiquidsbyDigitalDensityMeter4D4790TerminologyofAromaticHydrocarbonsandRe-latedChemicals3E29PracticeforUsingSignificantDigitsinTestDigitsinTestDatatoDetermineConformancewithSpecifications52.2OtherDocuments:OSHARegulations,29CFRparagraphs1910.1and1910.120063.Terminology3.1SeeTerminologyD4790fordefinitionoftermsusedinthistestmethod.4.SummaryofTestMethod4.1ReductiveConf...
