ASTM D6888-2004 用气体扩散分离和电流计探测法对有效氰化物进行配位位移和流量注入分析的标准试验方法

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【英文标准名称】:StandardTestMethodforAvailableCyanidewithLigandDisplacementandFlowInjectionAnalysis(FIA)UtilizingGasDiffusionSeparationandAmperometricDetection
【原文标准名称】:用气体扩散分离和电流计探测法对有效氰化物进行配位位移和流量注入分析的标准试验方法
【标准号】:ASTMD6888-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:分离;气体;检测;流量注入分析;位移流量;氰化物;扩散;配位体;流量分析
【英文主题词】:amperometry;availablecyanide;cyanide;cyanideamenabletochlorination;flowinjectionanalysis;freecyanide;gasdiffusionmembrane;ligandexchange;silverelectrode;weakaciddissociablecyanide
【摘要】:Cyanideandhydrogencyanidearehighlytoxic.Regulationshavebeenestablishedtorequirethemonitoringofcyanideinindustrialanddomesticwastesandsurfacewaters.4Thistestmethodisapplicablefornaturalwater,salinewaters,andwastewatereffluent.Themethodmaybeusedforprocesscontrolinwastewatertreatmentfacilities.ThespottestoutlinedinTestMethodsD2036,AnnexA1canbeusedtodetectcyanideandthiocyanateinwaterorwastewater,andtoapproximateitsconcentration.1.1Thismethodisusedtodeterminetheconcentrationofavailableinorganiccyanideinanaqueouswastewateroreffluent.Themethoddetectsthecyanidesthatarefree(HCNandCN-)andmetal-cyanidecomplexesthatareeasilydissociatedintofreecyanideions.Themethoddoesnotdetectthelesstoxicstrongmetal-cyanidecomplexes,cyanidesthatarenot"amenabletochlorination."1.2TotalcyanidecanbedeterminedforsamplesthathavebeendistilledasdescribedinTestMethodsD2036,TestMethodA,TotalCyanidesafterDistillation.Thecyanidecomplexesaredissociatedandabsorbedintothesodiumhydroxidecapturesolution,whichcanbeanalyzedwiththistestmethod;therefore,ligandexchangereagentsfromsections8.12and8.13wouldnotberequiredwhendeterminingtotalcyanideafterdistillation.1.3Thisprocedureisapplicableoverarangeofapproximately2to400956;g/L(partsperbillion)availablecyanide.Higherconcentrationscanbeanalyzedbydilutionorlowerinjectionvolume.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninNote2andSection9.
【中国标准分类号】:N12
【国际标准分类号】:17_120_10
【页数】:7P.;A4
【正文语种】: