Designation:D7771−17aStandardTestMethodforDeterminationofBenzo-α-Pyrene(BaP)ContentinCarbonBlack1ThisstandardisissuedunderthefixeddesignationD7771;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthequalitativeandquantitativedeterminationofonlybenzo-α-pyrene(BaP),aspecificpoly-cyclicaromatichydrocarbon(PAH),oncarbonblack.TheprocedureinvolvesSoxhletextractionwithtolueneandanaly-sisbygaschromatographywithmassspectrometry(GC/MS).ThismethodisnotintendedtotestforU.S.FoodandDrugAdministration(FDA21CFR178.3297)complianceofcarbonblacksusedforindirectfoodcontactapplications.1.2Units—ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustries2.2EPAStandard:3Method8270DSemivolatileOrganicCompoundsbyGasChromatography/MassSpectrometry(GC/MS)2.3FederalStandard:21CFR178.3297IndirectFoodAdditives:Adjuvants,Pro-ductionsAids,andSanitizers,ColorantsforPolymers43.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1benzo-α-pyrene,BaP,n—alsoknownas3,4-benzopyreneorbenzo-a-pyreneisaspecificpolycyclicaro-matichydrocarbon(P...
