DIN 52240-4-1994 玻璃生产用原料的检验.碳酸钙最低含量为95%的石灰石的化学分析.第1部分:氧化铝的测定

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【英文标准名称】:Testingofrawmaterialsfortheproductionofglass;chemicalanalysisoflimestonewithaminimumcontentof95%calciumcarbonate;determinationofaluminiumoxide
【原文标准名称】:玻璃生产用原料的检验.碳酸钙最低含量为95%的石灰石的化学分析.第1部分:氧化铝的测定
【标准号】:DIN52240-4-1994
【标准状态】:现行
【国别】:德国
【发布日期】:1994-04
【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】:光度测量法(化学分析);测定;化学分析和试验;碳酸盐矿;含量测定;试剂;原材料;生产;碳酸钙;光度测量法;石灰岩;定量分析;化学试剂;玻璃;氧化铝;试验;试验设备;分析
【英文主题词】:
【摘要】:Thisdocumentspecifiesthephotometricdeterminationofthealuminiumoxidecontentoflimestonewithaminimumcontentof95%calciumcarbonate.
【中国标准分类号】:Q30
【国际标准分类号】:81_040_10
【页数】:2P;A4
【正文语种】:德语


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【英文标准名称】:InformationTechnology-AbstractSyntaxNotationOne(ASN.1):ConstraintSpecification
【原文标准名称】:信息技术.抽象语法记法1(ASN.1):约束规范
【标准号】:ANSI/INCITS/ISO/IEC8824-3-1998
【标准状态】:作废
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:开放系统互连;数据交换;数据传输;数据传送;数据处理
【英文主题词】:datatransfer;datatransmission;dataexchange;osi;dataprocessing
【摘要】:
【中国标准分类号】:L70
【国际标准分类号】:35_100_60;35_040
【页数】:
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminationofRadonDecayProductConcentrationandWorkingLevelinIndoorAtmospheresbyActiveSamplingonaFilter
【原文标准名称】:通过过滤器主动取样测定室内空气中氡衰变产品浓度和环境等级的标准试验方法
【标准号】:ASTMD6327-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D22.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:grabsampling;indoorair;radon;workinglevel;Samplingair/atmosphericmaterials/applications;Activesamplermethodology;Grabsampling;Indoorairanalysis;Radon
【摘要】:ThetestmethodprovidesarelativelysimplemethodfordeterminationoftheconcentrationofRDPwithouttheneedforspecialtyequipmentbuiltexpresslyforsuchpurposes.UsingthistestmethodwillaffordinvestigatorsofradonindwellingsatechniquebywhichtheRDPcanbedetermined.Theuseoftheresultsofthistestmethodaregenerallyfordiagnosticpurposesandarenotnecessarilyindicativeofresultsthatmightbeobtainedbylongertermmeasurementmethods.Animprovedunderstandingofthefrequencyofelevatedradoninbuildingsandthehealtheffectofexposurehasincreasedtheimportanceofknowledgeofactualexposures.ThemeasurementofRDP,whicharethedirectcauseofpotentialadversehealtheffects,shouldbeconductedinamannerthatisuniformandreproducible;itistothisendthatthistestmethodisaddressed.1.1Thistestmethodprovidesinstructionforusingthegrabsamplingfiltertechniquetodetermineaccurateandreproduciblemeasurementsofindoorradondecayproduct(RDP)concentrationsandoftheworkinglevelvaluecorrespondingtothoseconcentrations.1.2MeasurementsmadeinaccordancewiththistestmethodwillproduceRDPconcentrationsrepresentativeofclosed-buildingconditions.Resultsofmeasurementsmadeunderclosed-buildingconditionswillhaveasmallervariabilityandaremorereproduciblethanmeasurementsobtainedwhenbuildingconditionsarenotcontrolled.Thistestmethodmaybeutilizedundernon-controlledconditions,butagreaterdegreeofvariabilityintheresultswilloccur.Variabilityintheresultsmayalsobeanindicationoftemporalvariabilitypresentatthesamplingsite.1.3Thistestmethodutilizesashortsamplingperiodandtheresultsareindicativeoftheconditionsonlyattheplaceandtimeofsampling.Theresultsobtainedbythistestmethodarenotnecessarilyindicativeoflongertermsofsamplingandshouldnotbeconfusedwithsuchresults.Theaveragingofmultiplemeasurementsoverhoursanddayscan,however,provideusefulscreeninginformation.Individualmeasurementsaregenerallyobtainedfordiagnosticpurposes.1.4Therangeofthetestmethodmaybeconsideredfrom0.0005WLtounlimitedworkinglevels(WL),andfrom40Bq/m3tounlimitedforeachindividualrandondecayproduct.1.5Thistestmethodprovidesinformationonequipment,procedures,andqualitycontrol.Itprovidesformeasurementswithintypicalresidentialorbuildingenvironmentsandmaynotnecessarilyapplytospecializedcircumstances,forexample,cleanrooms.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection9foradditionalprecautions.
【中国标准分类号】:C51
【国际标准分类号】:13_040_01
【页数】:5P.;A4
【正文语种】:英语