ASTM D 4260-1988 混凝土的磨蚀

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【英文标准名称】:Roadvehicles-Electricaldisturbancesbynarrow-bandradiatedelectromagneticenergy;vehicletestmethods-Part3:On-boardtransmittersimulation(ISO11451-3:1994)
【原文标准名称】:道路车辆.窄带辐射的电磁能量产生的电子干扰.车辆试验方法.第3部分:车载发射器模拟
【标准号】:DINISO11451-3-2000
【标准状态】:作废
【国别】:德国
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:辐射源;电子装置;道路车辆;电磁的;电磁兼容性;模拟;影响量;电磁试验;摩托车;运载工具;发射机;电子工程;干扰;规范;试验;定义;试验条件;干扰抑制;电子设备
【英文主题词】:Definition;Electromagnetic;Electromagneticcompatibility;Electromagnetictests;Electronicengineering;Electronicequipment;Electronically-operateddevices;Influencequantities;Interferencerejections;Interferences;Motorvehicles;Radiationsource;Roadvehicles;Simulation;Specification;Testing;Testingconditions;Transmitters;Vehicles
【摘要】:ThedocumentcontainsthegermantranslationoftheInternationalStandardISO11451-3:1994.TheserieISO11451specifiestestmethodsfortheimmunityofroadvehiclesagainstdifferentcontinuousnarrow-bandradiatedelectromagneticphenomena.Typicalseveritylevelsaregiveninanannexofeachpart.Part3specifiestheonboard-transmittersimulation.
【中国标准分类号】:L06
【国际标准分类号】:33_100_20
【页数】:6P.;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodsforTraceAnionsinHighPurityWaterbyIonChromatography
【原文标准名称】:离子色谱法测定高纯度水中痕量阴离子的标准试验方法
【标准号】:ASTMD5542-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:氯化物含量;硝酸盐含量;乙酸酯;高;磷酸盐;亚硝酸盐;水;甲酸酯;离子交换色谱法;试验;阴离子
【英文主题词】:anion;eluant;ionchromatography;trace
【摘要】:Theanionsfluoride,chloride,andsulfatehavebeenidentifiedasimportantcontributorstocorrosionofhighpressureboilers,electricpowerturbinesandtheirassociatedheatexchangers.Manyelectricpowerutilitiesattempttoreducethesecontaminantsintheirboilerfeedwatertolessthan1x03BC;g/L.Inthesemiconductormanufacturingprocesstheseions,amongothers,havebeenidentifiedasacauseoflowproductyieldand,thus,mustbemonitoredandcontrolledtolevelssimilartothoserequiredbytheelectricpowerindustry.Lowmolecularweightorganicacids,suchasacetateandformate,havebeenfoundinmanysteamgeneratorfeedwatersandcondensates.Theyarebelievedtocomefromthehightemperaturebreakdownoforganicmatterfoundinboilermakeupwater.ItisfeltthattheseorganicacidspromotecorrosionbyloweringthepHofboilerwatersandmayevenbecorrosivethemselves.Suchlowmolecularweightorganicsmayalsobeproducedwhenultravioletlightisusedtoproducebacteria-freewaterforsemiconductorprocessing.Suchpolarorganiccontaminantsaresuspectedofcausingreducedsemiconductoryields.Phosphatesarecommonlyaddedtodrumboilersinthelowmg/Lleveltoprecipitatecalciumandmagnesiumandtherebypreventscaleformation.Ionchromatographycanbeusedtomonitortheconcentrationofsuchchemicalsinboilerwater,aswellasdetectunwantedcarry-overintothesteam.1.1Thesetestmethodscoverthedeterminationoftrace(g/L)levelsoffluoride,acetate,formate,chloride,phosphate,andsulfateinhighpuritywaterusingionchromatographyincombinationwithsamplepreconcentration.Otheranions,suchasbromide,nitrite,nitrate,sulfite,andiodidecanbedeterminedbythismethod.However,sincetheyarerarelypresentinsignificantconcentrationsinhighpuritywater,theyarenotincludedinthistestmethod.Twotestmethodsarepresentedandtheirrangesofapplication,asdeterminedbyacollaborativestudy,areasfollows:RangeTested(956;g/LAdded)LimitofDetection(SingleOperator)(956;g/L)SectionsTestMethodA:7-15Chloride0-240.8Phosphate0-39Sulfate0-551.8TestMethodB:16-22Fluoride0-140.7Acetate0-4146.8Formate0-3465.6