Designation:D7439−14StandardTestMethodforDeterminationofElementsinAirborneParticulateMatterbyInductivelyCoupledPlasma–MassSpectrometry1ThisstandardisissuedunderthefixeddesignationD7439;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisstandardtestmethodspecifiesaprocedureforsamplepreparationandanalysisofairborneparticulatematterforthecontentofmetalsandmetalloidsinworkplaceairsamplesusinginductivelycoupledplasma–massspectrometry(ICP-MS).Thistestmethodcanbeusedforotherairsamplesprovidedtheuserensuresthevalidityofthetestmethod(byensuringthatappropriatedataqualityobjectivescanbeachieved).1.2ThisstandardtestmethodassumesthatsampleswillhavebeencollectedinaccordancewithTestMethodD7035.1.3ThisstandardtestmethodshouldbeusedbyanalystsexperiencedintheuseofICP-MS,theinterpretationofspectralandmatrixinterferencesandproceduresfortheircorrection.1.4Thisstandardtestmethodspecifiesanumberofalter-nativemethodsforpreparingtestsolutionsfromsamplesofairborneparticulatematter.Oneofthespecifiedsampleprepa-rationmethodsisapplicabletothemeasurementofsolublemetalormetalloidcompounds.Otherspecifiedmethodsareapplicabletothemeasurementoftotalmetalsandmetalloids.1.5Itistheuser’sresponsibilitytoensurethevalidityofthestandardmethodforfiltersofuntestedmatrices.1.6Table1providesanon-exclusivelistofmetalsandmetalloidsforwhichoneormoreofthesampledissolutionmethodsspecifiedinthisdocumentisapplicable.1.7Thisstandardtestmethodisnotapplicabletocom-poundsofmetalsandmetalloidsthatarepresentinthegaseousorvaporstate.1.8NodetailedoperatinginstructionsareprovidedbecauseofdifferencesamongvariousmakesandmodelsofsuitableICP-MSinstruments.Instead,theanalystshallfollowtheinstructionsprovidedbythemanufactureroftheparticularinstrument.Thistestmethoddoesnotaddresscomparativeaccuracyofdifferentde...
