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【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(2009)
【标准状态】:现行
【国别】:美国
【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】:
【英文主题词】:carbon;carbon-dioxide;inorganic-carbon;low-temperature-oxidation;membrane-conductivity-detection;organiccarbon;totalcarbon;Carboncontent--water;Carbondioxidecontent;Inorganiccarbon(IC);Low-temperaturetesting--water;Membraneconduct
【摘要】:Thistestmethodisusedfordeterminationofthecarboncontentofwaterfromavarietyofnatural,domestic,andindustrialsources.Initsmostcommonform,thistestmethodisusedtomeasureorganiccarbonasameansofmonitoringorganicpollutantsinhighpurityanddrinkingwater.Thesemeasurementsarealsousedinmonitoringwastetreatmentprocesses.TherelationshipofTOCtootherwaterqualityparameterssuchaschemicaloxygendemand(COD)andtotaloxygendemand(TOD)isdescribedintheliterature.1.1Thistestmethodcoversthedeterminationoftotalcarbon(TC),inorganiccarbon(IC),andtotalorganiccarbon(TOC)inwaterintherangefrom0.5to30mg/Lofcarbon.Higherlevelsmaybedeterminedbysampledilution.Thetestmethodutilizesultraviolet-persulfateoxidationoforganiccarbon,coupledwithaCO2selectivemembranetorecovertheCO2intodeionizedwater.Thechangeinconductivityofthedeionizedwaterismeasuredandrelatedtocarbonconcentrationintheoxidizedsample.Inorganiccarbonisdeterminedinasimilarmannerwithouttherequirementforoxidation.Inbothcases,thesampleisacidifiedtofacilitateCO2recoverythroughthemembrane.TherelationshipbetweentheconductivitymeasurementandcarbonconcentrationisdescribedbyasetofchemometricequationsforthechemicalequilibriumofCO2,HCO3x2212;,H+,andtherelationshipbetweentheionicconcentrationsandtheconductivity.Thechemometricmodelincludesthetemperaturedependenceoftheequilibriumconstantsandthespecificconductances.1.2Thistestmethodhastheadvantageofaveryhighsensitivitydetectorthatallowsverylowdetectionlevelsonrelativelysmallvolumesofsample.Also,useoftwomeasurementchannelsallowsdeterminationofCO2inthesampleindependentlyoforganiccarbon.IsolationoftheconductivitydetectorfromthesamplebytheCO2selectivemembraneresultsinaverystablecalibration,withminimalinterferences.1.3Thistestmethodwasusedsuccessfullywithreagentwaterspikedwithsodiumbicarbonateandvariousorganicmaterials.Itistheuser''sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Thistestmethodisapplicableonlytocarbonaceousmatterinthesamplethatcanbeintroducedintothereactionzone.Theinjectoropeningsizegenerallylimitsthemaximumsizeofparticlesthatcanbeintroduced.1.5Inadditiontolaboratoryanalyses,thistestmethodmaybeappliedtoonlinemonitoring.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Chemicalanalysisofcopperandcopperalloys;determinationoflead,extracting-titrationmethod
【原文标准名称】:铜和铜合金的化学分析.铅含量的测定.萃取滴定法
【标准号】:DIN50507-1977
【标准状态】:现行
【国别】:德国
【发布日期】:1977-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:铜合金;仪器;含量;含量测定;铜;杂质;合金;分析;抽样方法;铅
【英文主题词】:Alloys;Analysis;Chemicalanalysisandtesting;Content;Copper;Copperalloys;Determinationofcontent;Extractionmethodsofanalysis;Impurities;Instruments;Lead;Lead-containingalloys;Samplingmethods;Titration
【摘要】:Chemicalanalysisofcopperandcopperalloys;determinationoflead;extracting-titrationmethodAnalysechimiqueducuivreetdesalliagesducuivre;dosageduplomb;méthodedetitrageparextractionZusammenhangmitdervonderInternationalOrganiza
【中国标准分类号】:H13
【国际标准分类号】:77_040_30;77_120_30
【页数】:4P;A4
【正文语种】:德语