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【英文标准名称】:StandardTestMethodforDeterminationofFreeCyanideinWaterandWastewaterbyMicrodiffusion
【原文标准名称】:用微扩散法测定水和污水中游离氰化物的标准试验方法
【标准号】:ASTMD4282-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:试验;水;含量测定;污水
【英文主题词】:freecyanide;hexacyanoferrate;instability;microdiffusion;micropipet;pyridine-barbaturicacid;spectrophotometer;wastewater
【摘要】:Thistestmethodisusefulindistinguishingbetweenthepotentiallyavailablefreecyanide(totalcyanide)andthefreecyanideactuallypresent.Thistestmethodprovidesaconvenienttechniqueformakingon-sitefreecyanidedeterminations.1.1Thistestmethodcoversthedeterminationoffreecyanidesinwatersandwastewaters.Freecyanideisheredefinedasthecyanidewhichdiffusesascyanide(HCN),atroomtemperature,fromasolutionatpH6.1.2Thistestmethoddoesnotincludecomplexesthatresistdissociation,suchashexacyanoferratesandgoldcyanide,nordoesitincludethiocyanateandcyanohydrin.1.3Thistestmethodmaybeappliedtowaterandwastewatersamplescontainingfreecyanidefrom10to150956;g/L.Greaterconcentrationsmaybedeterminedbyappropriatedilution.1.4ThistestmethodhasbeenfullyvalidatedbycollaborativetestingasspecifiedbyPracticeD2777.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,see8.6,8.9,Section9,and12.2.1.
【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】: