Designation:D5708−15StandardTestMethodsforDeterminationofNickel,Vanadium,andIroninCrudeOilsandResidualFuelsbyInductivelyCoupledPlasma(ICP)AtomicEmissionSpectrometry1ThisstandardisissuedunderthefixeddesignationD5708;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscoverthedeterminationofnickel,vanadium,andironincrudeoilsandresidualfuelsbyinductivelycoupledplasma(ICP)atomicemissionspectrom-etry.Twodifferenttestmethodsarepresented.1.2TestMethodA(Sections7–11and18–22)—ICPisusedtoanalyzeasampledissolvedinanorganicsolvent.Thistestmethodusesoil-solublemetalsforcalibrationanddoesnotpurporttoquantitativelydetermineordetectinsolubleparticu-lates.1.3TestMethodB(Sections12–22)—ICPisusedtoanalyzeasamplethatisdecomposedwithacid.1.4Theconcentrationrangescoveredbythesetestmethodsaredeterminedbythesensitivityoftheinstruments,theamountofsampletakenforanalysis,andthedilutionvolume.Aspecificstatementisgivenin15.2.Typically,thelowconcentrationlimitsareafewtenthsofamilligramperkilogram.PrecisiondataareprovidedfortheconcentrationrangesspecifiedinSection21.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard..1.5.1Exception—Thevaluesgiveninparenthesesareforinformationonly1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD1548TestMethodforVanadiuminHeavyFuelOil1(Withdrawn1997)3D4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD5185TestMethodforMultielementDeterminationofUsedandUnusedLubricatingOilsandBaseOilsbyInducti...
