Designation:D4929−19aStandardTestMethodforDeterminationofOrganicChlorideContentinCrudeOil1ThisstandardisissuedunderthefixeddesignationD4929;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Theproceduresinthistestmethodcoverthedetermi-nationoforganicchloride(above1µg/gorganically-boundchlorine)incrudeoils,usingeitherdistillationandsodiumbiphenylreduction,distillationandmicrocoulometry,ordistil-lationandX-rayfluorescence(XRF)spectrometry.1.2Theproceduresinthistestmethodinvolvethedistilla-tionofcrudeoiltestspecimenstoobtainanaphthafractionpriortochloridedetermination.Thechloridecontentofthenaphthafractionofthewholecrudeoilcantherebybeobtained.SeeSection5regardingpotentialinterferences.1.3ProcedureAcoversthedeterminationoforganicchlo-rideinthewashednaphthafractionofcrudeoilbysodiumbiphenylreductionfollowedbypotentiometrictitration.1.4ProcedureBcoversthedeterminationoforganicchlo-rideinthewashednaphthafractionofcrudeoilbyoxidativecombustionfollowedbymicrocoulometrictitration.1.5ProcedureCcoversthedeterminationoforganicchlo-rideinthewashednaphthafractionofcrudeoilbyX-rayfluorescencespectrometry.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6.1Thepreferredconcentrationunitsaremicrogramsofchloridepergramofsample,thoughmilligramsofchlorideperkilogramofsampleiscommonlyusedforProcedureC.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmen...
