Designation:D4165−06(Reapproved2012)StandardTestMethodforCyanogenChlorideinWater1ThisstandardisissuedunderthefixeddesignationD4165;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofcyanogenchlorideinwater.Cyanogenchlorideisnormallypresentonlyatverylowconcentrations;itisaverylabileandsparselysolublegaseouscompound.Watersamplesmaycontaincya-nogenchlorideafterthechlorinationofwastewaterscontain-ingcyanideorthiocyanatecompounds.1.2Cyanogenchlorideisunstable.Aquicktestusingaspotplateorcomparatorassoonasthesampleiscollectedmaybethebesttest,reducingthelossofcyanogenchlorideduringthetimelapsebetweensamplingandanalysis.(SeeFig.1foratypicaldecaycurveforcyanogenchlorideinasolution.)1.3Thistestmethodhasbeenusedsuccessfullywithreagentwater.Theanalystisresponsiblefordeterminingwhetherthetestmethodisapplicabletothewatermatrixbeingtested.ReferenceismadetoTestMethodDofTestMethodsD2036whichisbasedonsimilarchemicalreactionsandhasbeenevaluatedbycollaborativetestinginthismatrix.1.4Thelowerlimitofdetectabilityis0.005mgCN−/L.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninNote1andNote2andSection9.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2036TestMethodsforCyanidesinWaterD3370PracticesforSamplingWaterfromClosedConduitsD3856GuideforManagementSystemsinLaboratoriesEngagedinAnalysisofWaterD4210PracticeforIntralaboratoryQualityControlProce-duresandaDiscussiononReportingLow-LevelData(Withdrawn2002)3D5789PracticeforWritingQualityControlSpecificationsforStan...
