【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixturesusingdynamicvolumetricmethods-Part11:Electrochemicalgeneration
【原文标准名称】:气体分析.动态容量法制备标定用气体混合物.第11部分:电化学生成法
【标准号】:ISO6145-11-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-10
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC158
【标准类型】:()
【标准水平】:()
【中文主题词】:校正;校准气;化学成分;控制样品;电化学方法;电解的;气体分析;混合气体;气体;发生
【英文主题词】:Analysis;Calibration;Calibrationgases;Chemicalanalysisandtesting;Chemicalcomposition;Controlsamples;Electrochemicalmethods;Electrolytic;Gasanalysis;Gasmixtures;Gases;Gas-volumetricanalysis;Generation;Inspectionequipment;Materialstesting;Mathematicalcalculations;Methods;Production;Testgases;Volumetric;Volumetricanalysis
【摘要】:ThispartofISO6145specifiesamethodforthepreparationofcalibrationgasmixturesbyusingelectrochemicalgenerationofacalibrationcomponentandintroductionintoacomplementarygasflow.Byalterationofthegasfloworthechargepassedthroughthecellelectrolyte,itispossibletochangethecompositionofthegasmixture.Therelativeexpandeduncertaintyofthecalibrationgascontent,U,obtainedbymultiplyingtherelativecombinedstandarduncertaintiesbyacoveragefactor,k=2,isnotgreaterthanb%ThemethoddescribedinthispartofISO6145isintendedtobeappliedtothepreparationofcalibrationgesmixturesinthevolumefractionranges(0,1to250)×10.NOTE1Gasesthatcanbeproducedbyelectrochemicalgenerationareoxygen(O2),hydrogen(H2),hydrogencyanide(HCN),hydrogensulfide(H2S),chlorine(Cl2),bromine(Br2),chlorinedioxide(CIO2),ammonia(NH3),nitricoxide(NO),nitrogen(N2),carbondioxide(CO2),phosphine(PH3),arsine(AsH3)ando/one(O3).NOTE2Themeritsofthemethodarethatastablecalibrationgasmixturecanbequicklypreparedwithinminutes.NOTE3Gasblendingsystemsbasedonelectrochemicalgenerationandthermalmassflowcontrollers,withthefacilityofcomputerizationandautomaticcontrol,arecommerciallyavailable.AnexampleisgiveninAnnexA.
【中国标准分类号】:G04
【国际标准分类号】:71_040_40
【页数】:14P;A4
【正文语种】:英语