Designation:D7511−12(Reapproved2017)´1StandardTestMethodforTotalCyanidebySegmentedFlowInjectionAnalysis,In-LineUltravioletDigestionandAmperometricDetection1ThisstandardisissuedunderthefixeddesignationD7511;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—WarningnoteswereeditoriallyupdatedthroughoutinJuly2017.1.Scope1.1Thistestmethodisusedfordeterminingtotalcyanideindrinkingandsurfacewaters,aswellasdomesticandindustrialwastes.Cyanideion(CN–),hydrogencyanideinwater(HCN(aq)),andthecyano-complexesofzinc,copper,cadmium,mercury,nickel,silver,andironmaybedeterminedbythistestmethod.CyanideionsfromAu(I),Co(III),Pd(II),andRu(II)complexesareonlypartiallydetermined.1.2Themethoddetectionlimit(MDL)is1.0µg/Lcyanideandtheminimumlevel(ML)is3µg/L.Theapplicablerangeofthemethodis3to500µg/Lcyanideusinga200-µLsampleloop.Extendtherangetoanalyzehigherconcentrationsbysampledilutionorchangingthesampleloopvolume.1.3Thistestmethodcanbeusedbyanalystsexperiencedwithequipmentusingsegmentedflowanalysis(SFA)andflowinjectionanalysis(FIA)orworkingundertheclosesupervisionofsuchqualifiedpersons.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specifichazardstatementsaregivenin8.5andSection9.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocume...
