ASTM D6785-2002 用火焰或石墨炉原子吸收光谱法测定工作场所空气中铅含量的标准试验方法
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【英文标准名称】:StandardTestMethodforDeterminationofLeadinWorkplaceAirUsingFlameorGraphiteFurnaceAtomicAbsorptionSpectrometry
【原文标准名称】:用火焰或石墨炉原子吸收光谱法测定工作场所空气中铅含量的标准试验方法
【标准号】:ASTMD6785-2002
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:lead;flame;graphitefurnace;atomicabsorptionspectromety;airborneparticles
【摘要】:1.1Thisstandardspecifiesflameandgraphitefurnaceatomicabsorptionspectrometricmethodsforthedeterminationofthetime-weightedaveragemassconcentrationofparticulateleadandleadcompoundsinworkplaceair.1.2Themethodisapplicabletopersonalsamplingoftheinhalablefractionofairborneparticles,asdefinedinISO7708,andtostatic(area)sampling.1.3Thesampledissolutionprocedurespecifieshotplateormicrowavedigestion,orultrasonicextraction(11.2).Thesampledissolutionprocedureisnoteffectiveforallleadcompounds(seeSection5).Theuseofanalternative,morevigorousdissolutionprocedureisnecessarywhenitisdesiredtoextractleadfromcompoundspresentinthetestatmospherethatareinsolubleusingthedissolutionproceduresdescribedherein.Forexampleifitisdesiredtodeterminesilicatelead,ahydrofluoricaciddissolutionprocedureisrequired.1.4Theflameatomicabsorptionmethodisapplicabletothedeterminationofmassesofapproximately1to200956;gofleadpersample,withoutdilution(1).Thegraphitefurnaceatomicabsorptionmethodisapplicabletothedeterminationofmassesofapproximately0.01to0.5956;gofleadpersample,withoutdilution(1).1.5Theultrasonicextractionprocedurehasbeenvalidatedforthedeterminationofmassesofapproximately20to100956;gofleadpersample,forlaboratory-generatedleadfumeairfiltersamples(2).1.6Theconcentrationrangeforleadinairforwhichthisprocedureisapplicableisdeterminedinpartbythesamplingprocedureselectedbytheuser(seeSection10).1.7Anionsthatformprecipitateswithleadmayinterfere,butthispotentialinterferenceisovercomebytheadditionofthedisodiumsaltofethylenediaminetetraaceticacid(EDTA)whennecessary.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30;71_040_50
【页数】:15P.;A4
【正文语种】:
【英文标准名称】:Bushingsabove1kVupto36kVandfrom250Ato3,15kAforliquidfilledtransformers.
【原文标准名称】:充液变压器用电压大于1kV并可达36kV和电流250A至3.15kA的套管
【标准号】:NFC66-554-1997
【标准状态】:现行
【国别】:法国
【发布日期】:1997-10-01
【实施或试行日期】:1997-10-05
【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】:定义;定义;;绝缘液体;规范(验收);液体;绝缘;电气工程;尺寸;型式;材料;铸塑树脂绝缘;变压器;陶瓷端子套管;套管;油浸式变压器;轴瓦;可置换性;绝缘套管;绝缘子;额定电压
【英文主题词】:Bushings;Castingresininsulation;Cast-resindry-typetransformers;Ceramicterminaltubes;Definition;Definitions;Dimensions;Electricalengineering;Electrically-insulatedbushings;Insulatingliquids;Insulations;Insulators;Liquids;Materials;Oil-immersedtransformers;Ratedvoltages;Replaceability;Specification(approval);Transformers;Types
【摘要】:
【中国标准分类号】:K48
【国际标准分类号】:29_080_20
【页数】:38P.;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforBeamDeflectionof"Fiberglass"(Glass-Fiber-ReinforcedThermosettingResin)PipeUnderFullBoreFlow
【原文标准名称】:在满管水流情况下玻璃纤维增强热固树脂管射束偏转的标准试验方法
【标准号】:ASTMD2925-2001(2007)e1
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:D20.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:管;塑料;热固性聚合物;试验
【英文主题词】:beamdeflection;fiberglasspipe;fullboreflow;elasticmodulus
【摘要】:Intheabsenceofdeflectionmeasurementsfromactualinstalled-above-groundpiping,thistestmethodmaybeusedtoevaluatetheinfluenceofspanlengthonmid-spandeflectionsatdifferingtemperaturesunderfullboreflow.Note38212;Aflatbearingarea,smallcontactarea,andnarrowbearingwidthmayinducehighlocalizedsupportinteractionstresses,andconstraintsimposedbythesupportsmayalsoadverselyinfluencedeflectionsandperformanceofthepipe.1.1Thistestmethodcoversmeasurementofthedeflectionasafunctionoftimeofaspecimenoffiberglasspipesupportedonaflatnon-arcedsupportasasimplebeamunderfullboreflowofwateratelevatedtemperatures.Bothglass-fiber-reinforcedthermosetting-resinpipe(RTRP)andglass-fiber-reinforcedpolymermortarpipe(RPMP)arefiberglasspipes.Note18212;Forthepurposesofthisstandard,polymerdoesnotincludenaturalpolymers.1.2Thistestmethodcanbeusedtodeterminedeflectionatvaryingconditionsbysubstitutingothertestmedia.1.3Deflectionsobservedusingthistestmethodarerepresentativeonlyofpipingsupportedasasimplebeamunderfullboreflowwhichhasonediameterofpipeoverhangingateachsupport.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.Note28212;ThereisnoknownISOequivalenttothisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:23_040_20
【页数】:4P.;A4
【正文语种】: