Designation:F1845−08StandardTestMethodforTraceMetallicImpuritiesinElectronicGradeAluminum-Copper,Aluminum-Silicon,andAluminum-Copper-SiliconAlloysbyHigh-Mass-ResolutionGlowDischargeMassSpectrometer1ThisstandardisissuedunderthefixeddesignationF1845;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddeterminestheconcentrationsoftracemetallicimpuritiesinhighpurity(99.99wt.%pure,orpurer,withrespecttometallictraceimpurities)aluminum-copper,aluminum-siliconandaluminum-copper-siliconalloyswithmajoralloyconstituentsasfollows:aluminumGreaterthan95.0%copperLessorequalthan5.0%siliconLessorequalthan5.0%1.2Thistestmethodpertainstoanalysisbymagnetic-sectorglowdischargemassspectrometer(GDMS).1.3ThistestmethoddoesnotincludealltheinformationneededtocompleteGDMSanalyses.Sophisticatedcomputer-controlledlaboratoryequipment,skillfullyusedbyanexperi-encedoperator,isrequiredtoachievetherequiredsensitivity.Thistestmethoddoescovertheparticularfactors(forexample,specimenpreparation,settingofrelativesensitivityfactors,determinationofdetectionlimits,etc.)knownbytherespon-sibletechnicalcommitteetoeffectthereliabilityofhighpurityaluminumanalyses.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E135TerminologyRelatingtoAnalyticalChemistryforMetals,Ores,andRelatedMaterialsE1593GuideforAssessingtheEfficacyofAirCareProductsinReducingSensorlyPerceivedIndoorAirMalodorIntensity3.Terminology3.1TerminologyinthistestmethodisconsistentwithTerminologyE135.Requiredterminologyspecifictothistestmethod,notcoveredinTerminologyE135,isindicatedin3.2.3.2Defi...
