Designation:D7011−15(Reapproved2019)StandardTestMethodforDeterminationofTraceThiopheneinRefinedBenzenebyGasChromatographyandSulfurSelectiveDetection1ThisstandardisissuedunderthefixeddesignationD7011;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthiopheneinrefinedbenzeneusinggaschromatographyandsulfurselectivedetection.Thetestmethodisapplicabletothedeterminationofthiopheneatlevelsof0.02to2.18mgthiopheneperkginbenzene(mg/kg)ontheAED,0.03to1.87mg/kgonthePFPD,and0.03to2.11mg/kgontheSCD.Therangeofthetestmethodmaybeextendedbymodifyingthesampleinjectionvolume,splitratios,calibrationrange,orsampledilutionwiththiophene-freesolvent.1.2Indeterminingtheconformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD2359SpecificationforRefinedBenzene-535D3437PracticeforSamplingandHandlingLiquidCyclicProductsD4734SpecificationforRefinedBenzene-545D4735TestMethodforDeterminationofTraceThiopheneinRefi...
