Designation:D4129−05(Reapproved2013)StandardTestMethodforTotalandOrganicCarboninWaterbyHighTemperatureOxidationandbyCoulometricDetection1ThisstandardisissuedunderthefixeddesignationD4129;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftotalandorganiccarboninwaterandwastewater,includingbrackishwatersandbrinesintherangefrom2to20000mg/L.Thistestmethodhastheadvantagesofawiderangeofconcentrationwhichmaybedeterminedwithoutsampledilutionandtheprovisionforboatorcapillaryintroductionofsamplescontain-ingsedimentsandparticulatematterwheresyringeinjectionisinappropriate.1.2Thisprocedureisapplicableonlytothatcarbonaceousmatterinthesamplethatcanbeintroducedintothereactionzone.Whensyringeinjectionisusedtointroducesamplesintothecombustionzone,thesyringeneedleopeningsizelimitsthemaximumsizeofparticlesthatcanbepresentinsamples.Sludgeandsedimentsamplesmustbehomogenizedpriortosamplingwithamicropipetororotherappropriatesamplerandladleintroductionintothecombustionzoneisrequired.1.3Theprecisionandbiasinformationreportedinthistestmethodwasobtainedincollaborativetestingthatincludedwatersofthefollowingtypes:distilled,deionized,potable,natural,brine,municipalandindustrialwaste,andwaterderivedfromoilshaleretorting.Sincetheprecisionandbiasinformationreportedmaynotapplytowatersofallmatrices,itistheuser’sresponsibilitytoensurethevalidityofthistestmethodonsamplesofothermatrices.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionar...
