NF L17-020-1996 航空航天系列.非金属材料.液相色谱法特性(高性能液相色谱法.静挤压色层分离法).一般分类法
时间:2024-05-14 00:20:42 来源: 标准资料网 作者：标准资料网 阅读：8413
【英文标准名称】:Aerospaceseries.Non-metallicmaterials.Liquidchromatographycharacterization(highperformanceliquidchromatography.Stericexclusionchromatography).Generalmethodology.
【原文标准名称】:航空航天系列.非金属材料.液相色谱法特性(高性能液相色谱法.静挤压色层分离法).一般分类法
【标准号】:NFL17-020-1996
【标准状态】:现行
【国别】:法国
【发布日期】:1996-06-01
【实施或试行日期】:1996-06-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:V13
【国际标准分类号】:49_025_99
【页数】:19P;A4
【正文语种】:其他
【英文标准名称】:Fixedcapacitorsforuseinelectronicequipment-Part14-3:Blankdetailspecification-Fixedcapacitorsforelectromagneticinterferencesuppressionandconnectiontothesupplymains-AssessmentlevelDZ
【原文标准名称】:电子设备用固定电容器.空白详细规范.抑制电磁干扰和电源网络连接用固定电容器.评定等级DZ
【标准号】:BSEN60384-14-3-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-11-01
【实施或试行日期】:2005-01-12
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:额定值;电子工程;电力网供电;干扰抑制;特性;测量技术;质量评定;质量评定程序;电磁干扰;空白格式;电子设备及元件;电容器;测量;固定电容器;详细规范;质量;试验;规范;组件;尺寸;电气工程
【英文主题词】:
【摘要】:Fixedcapacitorsforuseinelectronicequipment—Part14-3:Blankdetailspecification—Fixedcapacitorsforelectromagneticinterferencesuppressionandconnectiontothesupplymains—AssessmentlevelDZ1Generaldata2Inspectionrequirements
【中国标准分类号】:L11
【国际标准分类号】:31_060_10
【页数】:16P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforTotalCarbon,InorganicCarbon,andOrganicCarboninWaterbyUltraviolet,PersulfateOxidation,andMembraneConductivityDetection
【原文标准名称】:用紫外线、过硫酸盐氧化物和薄膜导电率检测法测定水中总含碳量、有机碳和无机碳的标准试验方法
【标准号】:ASTMD5904-2002
【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】:分析方法;试验;碳含量;水质
【英文主题词】:carbon;carbon-dioxide;inorganic-carbon;low-temperature-oxidation;membrane-conductivity-detection;organiccarbon;totalcarbon
【摘要】:Thistestmethodisusedfordeterminationofthecarboncontentofwaterfromavarietyofnatural,domestic,andindustrialsources.Initsmostcommonform,thistestmethodisusedtomeasureorganiccarbonasameansofmonitoringorganicpollutantsinhighpurityanddrinkingwater.Thesemeasurementsarealsousedinmonitoringwastetreatmentprocesses.TherelationshipofTOCtootherwaterqualityparameterssuchaschemicaloxygendemand(COD)andtotaloxygendemand(TOD)isdescribedintheliterature.51.1Thistestmethodcoversthedeterminationoftotalcarbon(TC),inorganiccarbon(IC),andtotalorganiccarbon(TOC)inwaterintherangefrom0.5to30mg/Lofcarbon.Higherlevelsmaybedeterminedbysampledilution.Thetestmethodutilizesultraviolet-persulfateoxidationoforganiccarbon,coupledwithaCO2selectivemembranetorecovertheCO2intodeionizedwater.Thechangeinconductivityofthedeionizedwaterismeasuredandrelatedtocarbonconcentrationintheoxidizedsample.Inorganiccarbonisdeterminedinasimilarmannerwithouttherequirementforoxidation.Inbothcases,thesampleisacidifiedtofacilitateCO2recoverythroughthemembrane.TherelationshipbetweentheconductivitymeasurementandcarbonconcentrationisdescribedbyasetofchemometricequationsforthechemicalequilibriumofCO2,HCO3-,H+,andtherelationshipbetweentheionicconcentrationsandtheconductivity.Thechemometricmodelincludesthetemperaturedependenceoftheequilibriumconstantsandthespecificconductances.1.2Thistestmethodhastheadvantageofaveryhighsensitivitydetectorthatallowsverylowdetectionlevelsonrelativelysmallvolumesofsample.Also,useoftwomeasurementchannelsallowsdeterminationofCO2inthesampleindependentlyoforganiccarbon.IsolationoftheconductivitydetectorfromthesamplebytheCO2selectivemembraneresultsinaverystablecalibration,withminimalinterferences.1.3Thistestmethodwasusedsuccessfullywithreagentwaterspikedwithsodiumbicarbonateandvariousorganicmaterials.Itistheuser'sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Thistestmethodisapplicableonlytocarbonaceousmatterinthesamplethatcanbeintroducedintothereactionzone.Theinjectoropeningsizegenerallylimitsthemaximumsizeofparticlesthatcanbeintroduced.1.5Inadditiontolaboratoryanalyses,thistestmethodmaybeappliedtoonlinemonitoring.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:7P.;A4
【正文语种】: