【英文标准名称】:StandardTestMethodforTotalCyanideinWaterbyMicroDistillationfollowedbyFlowInjectionAnalysiswithGasDiffusionSeparationandAmperometricDetection
【原文标准名称】:利用气体扩散分离和安培检测法对微蒸馏后水样中总氰化物的流量注入分析(FIA)的标准试验方法
【标准号】:ASTMD7284-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:amperometry;cyanide;distillation;flowinjectionanalysis;gasdiffusionmembrane;totalcyanide
【摘要】:Cyanideandhydrogencyanidearehighlytoxic.Regulationshavebeenestablishedtorequirethemonitoringofcyanideinindustrialanddomesticwastesandsurfacewaters.Thistestmethodisapplicablefornaturalwaters,industrialwastewatersandeffluents.1.1Thistestmethodisusedtodeterminetheconcentrationoftotalcyanideinanaqueouswastewateroreffluent.Themethoddetectsthecyanidesthatarefree(HCNandCN-)andstrong-metal-cyanidecomplexesthatdissociateandreleasefreecyanidewhenrefluxedunderstronglyacidicconditions.1.2Thismethodmaynotbeapplicabletoprocesssolutionsfrompreciousmetalsminingoperations.1.3Thisprocedureisapplicableoverarangeofapproximately2to400x03BC;g/L(partsperbillion)totalcyanide.Higherconcentrationscanbemeasuredwithsampledilutionorlowerinjectionvolume.1.4ThedeterminativestepofthismethodutilizesflowinjectionwithamperometricdetectionbasedonTestMethodD6888.Priortoanalysis,samplesmustbedistilledwithamicro-distillationapparatusdescribedinthistestmethodorwithasuitablecyanidedistillationapparatusspecifiedinTestMethodsD2036.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninNote2andSection9.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:6P.;A4
【正文语种】:英语