Designation:D3867−09StandardTestMethodsforNitrite-NitrateinWater1ThisstandardisissuedunderthefixeddesignationD3867;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscoverthedeterminationofnitritenitrogen,nitratenitrogen,andcombinednitrite-nitratenitrogeninwaterandwastewaterintherangefrom0.05to1.0mg/Lnitrogen.Twotestmethods2aregivenasfollows:SectionsTestMethodA—AutomatedCadmiumReduction9to18TestMethodB—ManualCadmiumReduction19to281.2Thesetestmethodsareapplicabletosurface,saline,waste,andgroundwaters.Itistheuser’sresponsibilitytoensurethevalidityofthesetestmethodsforwatersofuntestedmatrices.1.3ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeNote1andNote2.2.ReferencedDocuments2.1ASTMStandards:3D1129TerminologyRelatingtoWaterD1141PracticeforthePreparationofSubstituteOceanWaterD1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3370PracticesforSamplingWaterfromClosedConduitsD5810GuideforSpikingintoAqueousSamplesD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisE60PracticeforAnalysisofMetals,Ores,andRelatedMaterialsbySpectrophotometryE275PracticeforDescribingandMeasuringPerformanceofUltravioletandVisibleSpectrophotometers3.Terminology3.1Definitions:Fordefinitionsoftermsusedinthesetestmethods,refertoTerminologyD1129.4.SummaryofTestMethods4.1TotalOxidizedNitrogen—afilteredsampleispassedth...
