Designation:D7343−12Designation:558/07StandardPracticeforOptimization,SampleHandling,Calibration,andValidationofX-rayFluorescenceSpectrometryMethodsforElementalAnalysisofPetroleumProductsandLubricants1ThisstandardisissuedunderthefixeddesignationD7343;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticecoversinformationrelatingtosampling,calibrationandvalidationofX-rayfluorescenceinstrumentsforelementalanalysis,includingallkindsofwavelengthdispersive(WDXRF)andenergydispersive(EDXRF)tech-niques.Thispracticeincludessamplingissuessuchastheselectionofstoragevessels,transportation,andsub-sampling.Treatment,assembly,andhandlingoftechnique-specificsampleholdersandcupsarealsoincluded.Technique-specificrequirementsduringanalyticalmeasurementandvalidationofmeasurementforthedeterminationoftraceelementsinsamplesofpetroleumandpetroleumproductsaredescribed.Forsamplemixing,refertoPracticeD5854.Petroleumprod-uctscoveredinthispracticeareconsideredtobeasinglephaseandexhibitNewtoniancharacteristicsatthepointofsampling.1.2ApplicableTestMethods—ThispracticeisapplicabletotheXRFmethodsunderthejurisdictionofASTMSubcommit-teeD02.03onElementalAnalysis,andthoseunderthejurisdictionoftheEnergyInstitute’sTestMethodStandardiza-tionCommittee(Table1).Someofthesemethodsaretechni-callyequivalentthoughtheymaydifferindetails(Table2).1.3ApplicableFluids—Thispracticeisapplicabletopetro-leumandpetroleumproductswithvaporpressuresatsamplingandstoragetemperatureslessthanorequalto101kPa(14.7psi).UsePracticeD4057orIP475tosamplethesematerials.RefertoPracticeD5842whensamplingmaterialsthatalsorequireReidvaporpressure(RVP)determination.1.4Non-applicableFluids—Petroleumproductswhoseva-porpressureatsamplingandsamplestorageconditionsareabove101kPa(14.7psi)andliquefiedgases(thatis,LNG,LP...
