Designation:D7511−12StandardTestMethodforTotalCyanidebySegmentedFlowInjectionAnalysis,In-LineUltravioletDigestionandAmperometricDetection1ThisstandardisissuedunderthefixeddesignationD7511;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thismethodisusedfordeterminingtotalcyanideindrinkingandsurfacewaters,aswellasdomesticandindustrialwastes.Cyanideion(CN-),hydrogencyanideinwater(HCN(aq)),andthecyano-complexesofzinc,copper,cadmium,mercury,nickel,silver,andironmaybedeterminedbythismethod.CyanideionsfromAu(I),Co(III),Pd(II),andRu(II)complexesareonlypartiallydetermined.1.2Themethoddetectionlimit(MDL)is1.0µg/Lcyanideandtheminimumlevel(ML)is3µg/L.Theapplicablerangeofthemethodis3to500µg/Lcyanideusinga200-µLsampleloop.Extendtherangetoanalyzehigherconcentrationsbysampledilutionorchangingthesampleloopvolume.1.3Thismethodcanbeusedbyanalystsexperiencedwithequipmentusingsegmentedflowanalysis(SFA)andflowinjectionanalysis(FIA)orworkingundertheclosesupervisionofsuchqualifiedpersons.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninNote2andSection9.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2036TestMethodsforCyanidesinWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3370PracticesforSamplingWaterfromClosedConduitsD3856GuideforManagementSystemsinLaboratoriesEngagedinAnalysisofWaterD4210PracticeforIntralaboratoryQualityControlProce-du...
