DIN 74281-1-1987 气压制动设备.压缩空气罐.单室钢制焊接压缩空气罐
作者:标准资料网 时间:2024-05-17 03:27:07 浏览:8499
来源:标准资料网
【英文标准名称】:Airbreakingsystems;compressedairreservoirs;weldedsteelsinglechambercompressedairreservoirs
【原文标准名称】:气压制动设备.压缩空气罐.单室钢制焊接压缩空气罐
【标准号】:DIN74281-1-1987
【标准状态】:作废
【国别】:德国
【发布日期】:1987-04
【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】:砝码;压缩空气罐;数学计算;钢;空气制动系统;空气存储器;公差;压缩空气系统;制动系统;运载工具部件;道路车辆;表面;制动系统部件;材料;气动设备;摩托车;压力容器;制动器;检验;压力;装配;设计;尺寸;作标记
【英文主题词】:
【摘要】:
【中国标准分类号】:T24
【国际标准分类号】:43_040_40
【页数】:5P;A4
【正文语种】:德语
【英文标准名称】:Strontiumacetate
【原文标准名称】:醋酸锶
【标准号】:JISK8367-1964
【标准状态】:作废
【国别】:日本
【发布日期】:
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:Abolishment
【标准类型】:()
【标准水平】:()
【中文主题词】:乙酸乙酯;化学试剂;酯(羧酸);乙酸酯;锶;钾有机化合物;镉有机化合物;钴有机化合物;钙有机化合物;乙基化合物
【英文主题词】:cadmiumorganiccompounds;potassiumorganiccompounds;calciumorganiccompounds;cobaltorganiccompounds;;;
【摘要】:
【中国标准分类号】:G63
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:日语
【英文标准名称】:StandardPracticeforMeasuringElementsinWaterbyFlameAtomicAbsorptionSpectrophotometry
【原文标准名称】:火焰原子吸收分光光度法测定水中元素的标准实施规范
【标准号】:ASTMD4691-2002(2007)
【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】:D19.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:水;测量;元件
【英文主题词】:atomicabsorptionspectrophotometry;flame
【摘要】:Elementalconstituentsinwaterandwastewaterneedtobeidentifiedtosupporteffectivewaterqualitymonitoringandcontrolprograms.Currently,oneofthemostwidelyusedandpracticalmeansformeasuringconcentrationsofelementsisbyatomicabsorptionspectrophotometry.Themajoradvantageofatomicabsorptionoveratomicemissionisthealmosttotallackofspectralinterferences.Inatomicemission,thespecificityofthetechniqueisalmosttotallydependentonmonochromatorresolution.Inatomicabsorption,however,thedetectorseesonlythenarrowemissionlinesgeneratedbytheelementofinterest.1.1Thispracticecoversgeneralconsiderationsforthequantitativedeterminationofelementsinwaterandwastewaterbyflameatomicabsorptionspectrophotometry.Flameatomicabsorptionspectrophotometryissimple,rapid,andapplicabletoalargenumberofelementsindrinkingwater,surfacewaters,anddomesticandindustrialwastes.Whilesomewatersmaybeanalyzeddirectly,otherswillrequirepretreatment.1.2Detectionlimits,sensitivity,andoptimumrangesoftheelementswillvarywiththevariousmakesandmodelsofsatisfactoryatomicabsorptionspectrometers.Theactualconcentrationrangesmeasurablebydirectaspirationaregiveninthespecifictestmethodforeachelementofinterest.Inthemajorityofinstancestheconcentrationrangemaybeextendedlowerbyuseofelectrothermalatomizationandconverselyextendedupwardsbyusingalesssensitivewavelengthorrotatingtheburnerhead.Detectionlimitsbydirectaspirationmayalsobeextendedthroughsampleconcentration,solventextractiontechniques,orboth.Wheredirectaspirationatomicabsorptiontechniquesdonotprovideadequatesensitivity,theanalystisreferredtoPracticeD3919orspecializedproceduressuchasthegaseoushydridemethodforarsenic(TestMethodsD2972)andselenium(TestMethodsD3859),andthecoldvaportechniqueformercury(TestMethodD3223).1.3Becauseofthedifferencesamongvariousmakesandmodelsofsatisfactoryinstruments,nodetailedoperatinginstructionscanbeprovided.Insteadtheanalystshouldfollowtheinstructionsprovidedbythemanufacturerofaparticularinstrument.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardstatementsseeSection9.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:6P.;A4
【正文语种】:
