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【英文标准名称】:StandardSpecificationforRigidAcrylonitrile-Butadiene-Styrene(ABS)MaterialsforPipeandFittings
【原文标准名称】:用于管和管配件的硬质丙烯腈-丁二烯-苯乙烯共聚物材料的标准规范
【标准号】:ASTMD3965-2004
【标准状态】:作废
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:丙烯腈-丁二烯-苯乙烯共聚物;管;塑料;配件;化合物
【英文主题词】:compounds;fittings;pipes;acrylonitrilebutadienestyrene;plastics
【摘要】:
【中国标准分类号】:G33
【国际标准分类号】:23_040_45;23_040_20
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminationof2,4-TolueneDiisocyanate(2,4-TDI)and2,6-TolueneDiisocyanate(2,6-TDI)inAir(with9-(N-Methylaminomethyl)AnthraceneMethod)(MAMA)intheWorkplace
【原文标准名称】:在工作室空气中9-N-甲氨基甲基葸(MAMA)对2.4-甲苯聚氨酯(2,4-TDI)和2.6-甲苯聚氨酯(2,6-TDI)测定的标准试验方法
【标准号】:ASTMD5932-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:
【英文主题词】:airmonitoring;dualfiltersamplingsystem;high-performanceliquidchromatography;samplingandanalysis;toluenediisocyanate;workplaceatmospheres;9-(N-methylaminomethyl)anthracene;Airmonitoring;Dualfiltersamp
【摘要】:p>TDIisusedmostlyinthepreparationofrigidandsemi-rigidfoamsandadhesives.Isocyanateusehasbeengrowingforthelast20yearsandtheindustrialneedisstillgrowing.Diisocyanatesandpolyisocyanatesareirritantstoskin,eyes,andmucousmembranes.Theyarerecognizedtocauserespiratoryallergicsensitization,asthmaticbronchitis,andacuterespiratoryintoxication(6-9).TheAmericanConferenceofGovernmentalIndustrialHygienists(ACGIH)hasadoptedaThresholdLimitValuex2013;TimeWeightedAverage(TLVx2014;TWA)of0.036mg/m3withaShort-TermExposureLimit(STEL)of0.14mg/m3for2,4-TDI(10).TheOccupationalSafetyandHealthAdministrationoftheU.S.DepartmentofLabor(OSHA)hasapermissibleexposurelimitof0.02ppm(V)or0.14mg/m3ofTDIasaceilinglimitand0.005ppm(V)or0.036mg/m3asatime-weightedaverage(11).Monitoringofrespiratoryandotherproblemsrelatedtodiisocyanatesandpolyisocyanatesisaidedthroughtheutilizationofthistestmethod,duetoitssensitivityandlowvolumerequirements(15L).Itsshortsamplingtimesarecompatiblewiththedurationofmanyindustrialprocessesanditslowquantificationlimitalsosuitstheconcentrationsoftenfoundintheworkingarea.Thesegregatingsamplingdevicepertainingtothisproposedtestmethodphysicallyseparatesgasandaerosolallowingisocyanateconcentrationsinbothphysicalstatestobeobtained,thushelpingintheselectionofventilationsystemsandpersonalprotection.Thistestmethodisusedtomeasuregaseousconcentrationsof2,4-and2,6-TDIinairforworkplaceandambientatmospheres.1.1Thistestmethodcoversthedeterminationofgaseous2,4-toluenediisocyanate(2,4-TDI)and2,6-toluenediisocyanate(2,6-TDI)inairsamplescollectedfromworkplaceandambientatmospheres.1.2Differentialairsamplingisperformedwithasegregatingdevice.,Thegaseousfractioniscollectedonaglassfiberfilter(GFF)impregnatedwith9-(N-methylaminomethyl)anthracene(MAMA).1.3Theanalysisofthegaseousfractionisperformedwithahighperformanceliquidchromatograph(HPLC)equippedwithultraviolet(UV)andfluorescencedetectors.1.4TheanalysisoftheaerosolfractionisperformedseparatelyasdescribedinRef(1).1.5Therangeofapplicationofthistestmethod,utilizingUVandafluorescencedetector,isvalidatedfor0.029to1.16x03BC;gofmonomer2,4-and2,6-TDI/2.0mLofdesorptionsolution,whichcorrespondstoconcentrationsof0.002to0.077mg/m3ofTDIbasedona15-Lairsample.Thiscorrespondsto0.28to11ppb(V)andbracketstheestablishedTLVvalueof5ppb(v).1.6Afieldblanksamplingsystemisusedtocheckthepossibilityofcontaminationduringtheentiresamplingandanalysis.1.7ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C70
【国际标准分类号】:71_040_40
【页数】:6P.;A4
【正文语种】:英语