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DIN 8328 T.2-1981 钟表的编号.表带的种类

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【英文标准名称】:Numberingofwatchesandclocks-Kindofwristlet
【原文标准名称】:钟表的编号.表带的种类
【标准号】:DIN8328T.2-1981
【标准状态】:作废
【国别】:
【发布日期】:
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:


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【英文标准名称】:StandardTestMethodforDeterminationofAerosolMonomericandOligomericHexamethyleneDiisocyanate(HDl)inAirwith(Methoxy-2-phenyl-1)Piperazine(MOPIP)intheWorkplace
【原文标准名称】:利用(甲氧基-2-苯基-1)哌嗪(MOPIP)测定工作场所空气中气溶胶单体和低聚二异腈酸己二酯(HDI)的标准试验方法
【标准号】:ASTMD6561-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:气溶胶;空气;测定;二异腈酸己二酯(HDI);哌嗪;试验方法;试验;工作地点
【英文主题词】:airmonitoring;dualfiltersamplingsystem;hexamethylenediisocyanate;high-performanceliquidchromatography;(methoxy-2-phenyl-1)piperazine;samplingandanalysis;workplaceatmospheres
【摘要】:HDIismostlyusedinthepreparationofpaints.Forthelasttenyears,theuseofisocyanatesandtheirindustrialneedshavebeeninconstantgrowth.Diisocyanatesandpolyisocyanatesareirritantstoskin,eyes,andmucousmembranes.Theyarerecognizedtocauserespiratoryallergicsensitization,asthmaticbronchitis,andacuterespiratoryintoxication(3-6).TheAmericanConferenceofGovernmentalIndustrialHygienists(ACGIH)hasadoptedathresholdlimitvalue-timeweightedaverage(TLV-TWA)of0.005ppm(V)or0.034mg/m3formonomericHDI(7).TheOccupationalSafetyx0026;HealthAdministrationoftheU.S.DepartmentofLabor(OSHA)hasnotlistedapermissibleexposurelimit(PEL)forHDI(8).DuetoitslowLODandlowrequiredvolume(15L),thistestmethodiswellsuitedformonitoringofrespiratoryandotherproblemsrelatedtodiisocyanatesandpolyisocyanates.Itsshortsamplingtimesarecompatiblewiththedurationofmanyindustrialprocesses,anditslowdetectionlimitwiththeconcentrationsoftenfoundintheworkingarea.1.1Thistestmethodcoversthedeterminationofaerosolhexamethylenediisocyanate(HDI)inairsamplescollectedfromworkplaceandambientatmospheres.Themethoddescribedinthistestmethodcollectsseparatefractions.Onefractionwillbedominatedbyvapor,andtheotherfractionwillbedominatedbyaerosol.Itisnotknownatthepresenttimewhetherthisrepresentsaperfectseparationofvaporandaerosol,andinanycase,therearenotseparateexposurestandardsforvaporandaerosol.Therefore,incomparingtheresultsforisocyanateagainstastandard,resultsfromthetwofractionsshouldbecombinedtogiveasingletotalvalue.Thereasonforsplittingthesampleintotwofractionsistoincreaseanalyticsensitivityforthevaporfractionandalsotogivethehygienistorventilationengineersomeinformationconcerningthelikelystateoftheisocyanatespecies.Theanalysesofthetwofractionsaredifferent,andareprovidedinseparate,linked,standardstoavoidconfusion.Thistestmethodisprincipallyusedtodetermineshorttermexposure(15min)ofHDIinworkplaceenvironmentsforpersonalmonitoringorinambientair.Theanalysisofthevaporfractionisperformedseparately,asdescribedinTestMethodD6562.1.2Differentialairsamplingisperformedwithasegregatingdevice.Theaerosolfractioniscollectedonapolytetrafluoroethylene(PTFE)filter.1.3Immediatelyaftersampling,thePTFEfilteristransferredintoajarcontaininga(methoxy-2phenyl-1)piperazine(MOPIP)solutionintoluene.1.4Theanalysisoftheaerosolfractionisperformedbyusingahighperformanceliquidchromatograph(HPLC)equippedwithanultraviolet(UV)detector.Therangeofapplicationofthetestmethodhasbeenvalidatedfrom0.052to1.04gofmonomericHDI/mL,whichcorresponds,basedona15Lairsample,toconcentrationsfrom0.004to0.070mg/m3ofHDI.Thoseconcentrationscorrespondtoarangeofaerosolphaseconcentrationsfrom0.5ppb(V)to10ppb(V)andcovertheestablishedthresholdlimitvalve(TLV)valueof5ppb(V).1.5ThequantificationlimitforthemonomericHDIis0.041gpermL,whichcorrespondsto0.003mg/m3fora15Lsampledairvolume.ThisvalueisequivalenttotentimesthestandarddeviationobtainedfromtenmeasurementscarriedoutonastandardsolutionincontactwiththePTFEfilterwhoseconcentrationof0.1g/mLisclosetotheexpecteddetectionlimit.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesaf......
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:ChainU-links(shackles)forconveyors
【原文标准名称】:传动带输送机用U型链节(U形钩环)
【标准号】:DIN5699-1994
【标准状态】:现行
【国别】:德国
【发布日期】:1994-02
【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】:滚柱;锻件;螺母;链环;链条;特性;材料;紧固件;输送机;试验;检验;名称与符号;尺寸;设计
【英文主题词】:dimensions;haulingplants;materialshandling;materials;bucketelevators;links;safetyrequirements;rollers;inspection;properties;fasteners;conveyors;wroughtproducts;hexagonnuts;specification(approval);designations;flat;chainbrackets;forgings;design;heat-treatablesteels;chains;roundsteelchains;nuts;testing
【摘要】:
【中国标准分类号】:J81
【国际标准分类号】:53_040_20
【页数】:7P.;A4
【正文语种】:德语