Designation:D7622−10(Reapproved2015)StandardTestMethodforTotalMercuryinCrudeOilUsingCombustionandDirectColdVaporAtomicAbsorptionMethodwithZeemanBackgroundCorrection1ThisstandardisissuedunderthefixeddesignationD7622;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheproceduretodeterminethetotalmercurycontentinasampleofcrudeoil.Thistestmethodcanbeusedfortotalmercurydeterminationinnaturalandprocessedliquidandoilproducts(gasoline,naphtha,etc.).1.2Thistestmethodmaybeappliedtosamplescontainingbetween5.0ng⁄mLto350ng⁄mLofmercury.Theresultsmaybeconvertedtomassbasis.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4WARNING—Mercuryhasbeendesignatedbymanyregulatoryagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidneyandliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMa-terialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite—http://www.epa.gov/mercury/faq.htm—foraddi-tionalinformation.Usersshouldbeawarethatsellingmercuryand/ormercurycontainingproductsintoyourstateorcountrymaybeprohibitedbylaw.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4175TerminologyRelatingtoPetroleum,PetroleumProducts,andLubricantsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlC...
