标准资料网-标准资料免费资源平台

【英文标准名称】:Railwayapplications-Track-Performancerequirementsforfasteningsystems-Part5:fasteningsystemsforslabtrackwithrailonthesurfaceorrailembeddedinachannel.
【原文标准名称】:铁路应用设施.轨道.紧固系统的性能要求.第5部分:厚板轨枕的紧固系统
【标准号】:NFF50-051-5-2012
【标准状态】:现行
【国别】:法国
【发布日期】:2012-08-01
【实施或试行日期】:2012-08-11
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:沥青砖;车行道(公路);混凝土板;阻尼(波);效率;紧固件;固定件;性能;永存性铁路;道岔转换;检验荷载;轨道紧固设备;铁路应用设施;铁路建造;铁路设备;铁路;轨枕;规范(验收);钢轨枕;轨道(物料装卸设备);旅行线路;道岔;型式批准;振动;丁字形铁轨
【英文主题词】:Asphalttiles;Carriageways;Concreteslabs;Damping;Efficiency;Fasteners;Fixings;Performance;Permanentways;Pointwork;Proofloading;Railfasteningsystems;Railwayapplications;Railwayconstruction;Railwayinstallations;Railways;Sleepers;Specification(approval);Steelsleepers;Tracks(materialshandlingequipment);Travelways;Turnouts;Typeapprovals;Vibrations;Vignolrail
【摘要】:
【中国标准分类号】:S11
【国际标准分类号】:93_100
【页数】:19P;A4
【正文语种】:其他


【英文标准名称】:Indoor,ambiantandworkplaceair-Samplingandanalysisofvolatileorganiccompoundsbysorbenttube/thermaldesorption/capillarygaschromatography-Part1:Pumpedsampling
【原文标准名称】:室内、环境和工作场所空气用吸附管/热解吸/毛细管气相色谱法作挥发性有机化合物的取样及分析第1部分:泵唧取样
【标准号】:ISO16017-1-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC146
【标准类型】:()
【标准水平】:()
【中文主题词】:取样;解吸;抽样方法;毛细管;环境空气;室内气候;泵;管试验;大气;气相色谱法;热的;空气;挥发物测定;吸附;空气质量;分析;工作地点
【英文主题词】:Air;Airpurification;Airquality;Ambientair;Analysis;Atmosphere;Atmosphericpollutants;Bearings;Calibration;Capillary;Chromium;Cleaning;Compounds;Concentration;Desorption;Exteriorareas;Gasanalysis;Gaschromatography;Indoorclimate;Indoors;Inneratmosphere;Interferences;Mass;Methods;Methodsofanalysis;Openair;Operatingstations;Organic;Organiccompounds;Pipes;Pumps;Rooms;Sampling;Samplingmethods;Sidetesters;Solvents;Sorption;Testgases;Testing;Thermal;Thermics;Tubetests;Tubes;Volatile;Volatilematterdetermination;Workingplaces
【摘要】:ThispartofISO16017givesgeneralguidanceforthesamplingandanalysisofvolatileorganiccompounds(VOCs)inair.Itisapplicabletoambient,indoorandworkplaceatmospheresandtheassessmentofemissionsfrommaterialsinsmall-orfull-scaletestchambers.ThispartofISO16017isappropriateforawiderangeofVOCs,includinghydrocarbons,halogenatedhydro-carbons,esters,glycolethers,ketonesandalcohols.AnumberofsorbentsarerecommendedforthesamplingoftheseVOCs,eachsorbenthavingadifferentrangeofapplicability.Verypolarcompoundswillgenerallyrequirederivatization,verylowboilingcompoundswillonlybepartiallyretainedbythesorbents,dependingonambienttemperature,andcanonlybeestimatedqualitatively.Semi-volatilecompoundswillbefullyretainedbythesorbents,butmayonlybepartiallyrecovered.CompoundsforwhichthispartofISO16017hasbeentestedaregivenintables.ThispartofISO16017maybeapplicabletocompoundsnotlisted,butinthesecasesitisadvisabletouseaback-uptubecontainingthesameorastrongersorbent.ThispartofISO16017isapplicabletothemeasurementofairbornevapoursofVOCsinaconcentrationrangeofapproximately0,5μg/mto100mg/mindividualcompound.Theupperlimitoftheusefulrangeissetbythesorptivecapacityofthesorbentusedandbythelineardynamicrangeofthegaschromatographcolumnanddetectororbythesample-splittingcapabilityoftheanalyticalinstrumentationused.Thesorptivecapacityismeasuredasabreakthroughvolumeofair,whichdeterminesthemaximumairvolumethatshallnotbeexceededwhensampling.Thelowerlimitoftheusefulrangedependsonthenoiselevelofthedetectorandonblanklevelsofanalyteand/orinterferingartefactsonthesorbenttubes.Artefactsaretypicallysub-nanogramforwell-conditionedTenaxGRandcarbonaceoussorbentssuchasCarbopack/Carbotraptypematerials,carbonizedmolecularsievesandmolecularsievessuchasSpherocarb,orpurecharcoal;atlownanogramlevelsforTenaxTAandat5ngto50nglevelsforotherporouspolymerssuchasChromosorbsandPorapaks.Sensitivityistypicallylimitedto0,5μg/mfor10-litreairsampleswiththislattergroupofsorbentsbecauseoftheirinherenthighbackground.TheprocedurespecifiedinthispartofISO16017isapplicabletolowflowratepersonalsamplingpumpsandgivesatime-weightedaverageresult.Itisnotapplicabletothemeasurementofinstantaneousorshort-termfluctuationsinconcentration.note:1)ThesorbentslistedinannexCandelsewhereinthisInternationalStandardarethoseknowntoperformasspecifiedunderthispartofISO16017.Eachsorbentorproductthatisidentifiedbyatrademarkednameisuniqueandhasasolemanufacturer;however,theyarewidelyavailablefrommanydifferentsuppliers.ThisinformationisgivenfortheconvenienceofusersofthispartofISO16017anddoesnotconstituteanendorsementbyISOoftheproductnamed.Equivalentproductsmaybeusediftheycanbeshowntoleadtothesameresults.
【中国标准分类号】:C51
【国际标准分类号】:13_040_01
【页数】:29P;A4
【正文语种】:英语