ASTM D7039-2007 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

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【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】: