Designation:E1024–97StandardGuideforChemicalAnalysisofMetalsandMetalBearingOresbyFlameAtomicAbsorptionSpectrophotometry1ThisstandardisissuedunderthefixeddesignationE1024;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisguidecoversgeneralrecommendationsfortheuseofatomicabsorptionspectrophotometersintheflamemodeforthechemicalanalysisofMetalsandmetalbearingoresbyASTMmethods.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:E50PracticeforApparatus,Reagents,andSafetyPrecau-tionsforChemicalAnalysisofMetals2E863PracticeforDescribingFlameAtomicAbsorptionSpectroscopyEquipment3E1452PracticeforPreparationofCalibrationSolutionsforSpectrophotometricandSpectroscopicAtomicAnalysis3E1812PracticeforOptimizationofFlameAtomicAbsorp-tionSpectrometricEquipment33.SignificanceandUse3.1Theprecisionandaccuracyofatomicabsorptionanaly-sesareinfluencedbymanyfactors.Mostimportantofthesefactorsaretheproperpreparationofthetestsolutions,theproperselectionandpreparationofcalibrationsolutions,andinstrument-relatedfactors,suchaspropersettingofinstrumentparameters,thepropersequenceofcalibrationandtestsolutionmeasurements,andcorrectinterpretationoftheinstrument’sresponse.AnASTMmethodthatreferstothisguidespecifiestheproceduresforpreparationoftestandcalibrationsolutions.Thisguidegivestheinstrument-relatedproceduresforusingtheatomicabsorptionspectrophotometerintheflamemodeandcalculatingtheresults.3.2Becauseatomicabsorptionspectrophotometersvarygreatlyintheirsensitivityforanyspecificelement,thecon-centrationrangesfortestandcalibrationsolutionsgivenineachmetho...
