Designation:D5056−22StandardTestMethodforTraceMetalsinPetroleumCokebyAtomicAbsorption1ThisstandardisissuedunderthefixeddesignationD5056;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoverstheanalysisforthecommonlydeterminedtracemetals(aluminum,calcium,iron,nickel,silicon,sodium,andvanadium)inlaboratoryanalysissamplesofrawandcalcinedpetroleumcokebyatomicabsorptionspectroscopy.1.2TheelementalconcentrationrangesforwhichthistestmethodisapplicableandthelimitsofdetectionofthistestmethodarelistedinTable1.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forwarningstatements,seeSections9–11.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D346PracticeforCollectionandPreparationofCokeSamplesforLaboratoryAnalysisD1193SpecificationforReagentWaterD4175TerminologyRelatingtoPetroleumProducts,LiquidFuels,andLubricantsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSystemPerformanceD7740PracticeforOptimization,Calibration,andValida-tionofAtomicAbsorptionSpectrometryforMetalAnaly-sisofPetroleumProductsandLubricants3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD4175.4.SummaryofTestMethod4.1Arepresentativesampleof...
