【英文标准名称】:StandardTestMethodforSulfurinGasolineandDieselFuelbyMonochromaticWavelengthDispersiveX-rayFluorescenceSpectrometry
【原文标准名称】:用单色波长色散X射线荧光光谱法测定汽油和柴油燃料中硫的标准试验方法
【标准号】:ASTMD7039-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D02.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:柴油燃料;汽油;硫;测试;波长色散;X射线荧光;X射线荧光光谱法;X射线光度法
【英文主题词】:analysis;diesel;gasoline;fuel;monochromaticXray;MWDXRF;spectrometry;sulfur;wavelengthdispersiveX-rayfluorescence;WDXRF;Xray
【摘要】:Thistestmethodprovidesfortheprecisemeasurementofthetotalsulfurcontentofgasolinesanddieselswithminimalsamplepreparationandanalystinvolvement.Thetypicaltimeforeachanalysisistwotothreeminutes.Knowledgeofthesulfurcontentofdieselfuels,gasolines,andrefineryprocessstreamsusedtoblendgasolinesisimportantforprocesscontrolaswellasthepredictionandcontrolofoperationalproblemssuchasunitcorrosionandcatalystpoisoning,andintheblendingofproductstocommodityspecifications.Variousfederal,state,andlocalagenciesregulatethesulfurcontentofsomepetroleumproducts,includinggasolineanddieselfuel.Unbiasedandprecisedeterminationofsulfurintheseproductsiscriticaltocompliancewithregulatorystandards.1.1Thistestmethodcoversthedeterminationoftotalsulfurbymonochromatic,wavelength-dispersiveX-rayfluorescence(MWDXRF)spectrometryinsingle-phasegasolines,dieselfuels,andrefineryprocessstreamsusedtoblendgasolineanddiesel,atconcentrationsfrom2mg/kgto500mg/kg.Theprecisionofthistestmethodwasdeterminedbyaninterlaboratorystudyusingrepresentativesamplesoftheliquidsdescribedin1.1and1.2.Thepooledlimitofquantitation(PLOQ)wasestimatedtobe4mg/kg.Note1Volatilesamplessuchashigh-vapor-pressuregasolinesorlighthydrocarbonsmightnotmeetthestatedprecisionbecauseoftheevaporationoflightcomponentsduringtheanalysis.1.2GasolinesamplescontainingoxygenatesmaybeanalyzedwiththistestmethodprovidedthematrixofthecalibrationstandardsiseithermatchedtothesamplematricesorthematrixcorrectiondescribedinAnnexA1isappliedtotheresults.TheconditionsformatrixmatchingandmatrixcorrectionareprovidedintheInterferencessection(Section5).1.3Gasolinesanddieselswithsulfurcontentsabove500mg/kgcanbeanalyzedafterdilutionwithappropriatesolvent(see5.2).Theprecisionandbiasofsulfurdeterminationsondilutedsampleshasnotbeendeterminedandmaynotbethesameasshownforneatsamples(Section15).1.4Whentheelementalcompositionofthesamplesdiffersignificantlyfromthecalibrationstandardsusedtopreparethecalibrationcurve,thecautionsandrecommendationinSection5shouldbecarefullyobserved.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardinformation,see3.1.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:8P.;A4
【正文语种】:


【英文标准名称】:Specificationandqualificationofweldingproceduresformetallicmaterials-Weldingproceduretests-Part5:arcweldingoftitanium,zirconiumandtheiralloys.
【原文标准名称】:金属材料焊接过程的规范和合格鉴定.焊接过程试验.第5部分:钛、锌及其合金的弧焊接
【标准号】:NFA89-057-5-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-09-01
【实施或试行日期】:2004-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;焊接程序规范;含钛合金;取样;熔焊;空白格式;破坏试验;焊缝;认可;焊接工程;锆;电弧焊接;合格;钛;训练;含锆合金;钛合金;认可试验;金属焊接;验收;试样;焊接;定义;金属材料;试验;规范(验收);材料;无损检验;焊接工艺
【英文主题词】:
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_10
【页数】:30P;A4
【正文语种】:其他