Designation:D3867−16StandardTestMethodsforNitrite-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.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeNotes1and2.2.ReferencedDocuments2.1ASTMStandards:3D1129TerminologyRelatingtoWaterD1141PracticeforthePreparationofSubstituteOceanWaterD1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3370PracticesforSamplingWaterfromClosedConduitsD5810GuideforSpikingintoAqueousSamplesD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisD7781TestMethodforNitrite-NitrateinWaterbyNitrateReductaseE60PracticeforAnalysisofMetals,Ores,andRelatedMaterialsbySpectrophotometryE275PracticeforDescribingandMeasuringPerformanceofUltravioletandVisibleSpectrophotometers3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedintheseteststandards,refertoTerminologyD1129.4.Summary...
