【英文标准名称】:StandardPracticeforSamplingandDeterminationofHydrogenCyanide(HCN)inCombustionEffluentsandOtherStationarySources
【原文标准名称】:在燃料渗出液和固定排放源中氰化物取样和测定的标准实施规程
【标准号】:ASTMD7295-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:燃烧;氰化物;测定;渗出液;氰化氢;取样;固定的
【英文主题词】:amperometry;combustiongases;cyanide;firegases;flowinjectionanalysis;hydrogencyanide;stackemissions;workplacemonitoring
【摘要】:Hydrogencyanideishighlytoxic.Inrelativelylowquantities,hydrogencyanidecancauseasphyxiaanddeath.TheNationalFireProtectionAssociationhasassignedaflammabilityratingof4(severefirehazard)tohydrogencyanide.1.1Thispracticeisusedtodeterminetheconcentrationofgaseoushydrogencyanide(HCN)fromanycombustiondeviceoratmospherewherecyanidemaybepresent.WhileprimarilydesignedforthemeasurementofgasphaseHCN,thesamplecollectiondescribedinthispracticealsoincludescyanideion(CN-)absorbedparticlesthatmaybepresentinthesamplingatmosphere.1.1.1SamplescanbecollectedfromaclosedchambersuchastheNBSsmokeboxdescribedinTestMethodE662provideditisequippedwithsamplingports.1.1.2OpenchamberssuchasindustrialworkareasorlargescalefirescanbemonitoredforHCNwiththispractice.1.1.3TheHCNemissionsofaflowthroughsystemcanbedeterminedbysamplingfromitsdischargestack.ExamplesofsuchsystemsincludelargescalemanufacturingapplicationsandtheconecalorimeterdescribedinTestMethodE1354.1.2ThispracticecanbeusedtomonitorHCNlevelsinlabscalefiresmokeeffluentsinordertoestimatetoxicityofgasesproducedfromburningmaterials.SeeGuideE800.1.3Theconcentrationrangeofhydrogencyanidewillbedependentonthevolumeofgassampled,thevolumeofsodiumhydroxidesolutionplacedintheimpingerduringsampling,andtheanalyticalmethodusedtomeasurecyanide.Forexample,thelowerlimitofdetectionwouldbe0.002-mg/m3when0.1-m3ofcombustioneffluentiscollectedinto100-mLsodiumhydroxidesolutionbasedonadetectionlimitof0.002mg/Lcyanideintheimpingersolutionwhenusingtheflowinjectionanalysis(FIA)systemdescribedinTestMethodD6888.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z60
【国际标准分类号】:13_040_40
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Vitreousandporcelainenamels-DeterminationofsurfacescratchhardnessaccordingtotheMohsscale;GermanversionEN15771:2010
【原文标准名称】:玻璃和搪瓷.表面划痕莫氏硬度标准测试法.德文版本EN15771:2010
【标准号】:DINEN15771-2010
【标准状态】:现行
【国别】:德国
【发布日期】:2010-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Coatings;Definitions;Enamels;Materialstesting;Minerals;Mohs;Scratchhardness;Surfaces;Testperformance;Testing;Vitreousenamel
【摘要】:
【中国标准分类号】:
【国际标准分类号】:25_220_50
【页数】:7P;A4
【正文语种】:德语