ANSI/ASTM D4294-2007 用能量色散X射线荧光光谱法对石油和石油产品中硫的试验方法

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【英文标准名称】:TestMethodforSulfurinPetroleumandPetroleumProductsbyEnergy-DispersiveX-rayFluorescenceSpectrometry
【原文标准名称】:用能量色散X射线荧光光谱法对石油和石油产品中硫的试验方法
【标准号】:ANSI/ASTMD4294-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【实施或试行日期】:2007-11-27
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:含量测定;石油产品;测试
【英文主题词】:Determinationofcontent;Lubricants;Petroleumproducts;Spectrometry;Sulphur;Testing
【摘要】:Thistestmethodcoversthedeterminationoftotalsulfurinpetroleumandpetroleumproductsthataresingle-phaseandeitherliquidatambientconditions,liquefiablewithmoderateheat,orsolubleinhydrocarbonsolvents.Thesematerialscanincludedieselfuel,jetfuel,kerosene,otherdistillateoil,naphtha,residualoil,lubricatingbaseoil,hydraulicoil,crudeoil,unleadedgasoline,gasohol,biodiesel(seeNote2),andsimilarpetroleumproducts.Note1-OxygenatedfuelswithethanolormethanolcontentsexceedingthelimitsgiveninTable1canbedealtwithusingthistestmethod,buttheprecisionandbiasstatementsdonotapply(seeAppendixX2).Note2-Forsampleswithhighoxygencontents(3wt%)sampledilutionasdescribedin1.3ormatrixmatchingmustbeperformedtoassureaccurateresults.Interlaboratorystudiesonprecisionrevealedthescopetobe17mg/kgto4.6mass%.Anestimateofthistestmethod'spooledlimitofquantitation(PLOQ)is17.0mg/kgascalculatedbytheproceduresinPracticeD6259.However,becauseinstrumentationcoveredbythistestmethodcanvaryinsensitivity,theapplicabilityofthetestmethodatsulfurconcentrationsbelowapproximately20mg/kgmustbedeterminedonanindividualbasis.Anestimateofthelimitofdetectionisthreetimesthereproducibilitystandarddeviation,andanestimateofthelimitofquantitationistentimesthereproducibilitystandarddeviation.Samplescontainingmorethan4.6mass%sulfurcanbedilutedtobringthesulfurconcentrationofthedilutedmaterialwithinthescopeofthistestmethod.SamplesthataredilutedcanhavehighererrorsthanindicatedinSection16thannon-dilutedsamples.Volatilesamples(suchashighvaporpressuregasolinesorlighthydrocarbons)maynotmeetthestatedprecisionbecauseofselectivelossoflightmaterialsduringtheanalysis.Afundamentalassumptioninthistestmethodisthatthestandardandsamplematricesarewellmatched,orthatthematrixdifferencesareaccountedfor(see5.2).MatrixmismatchcanbecausedbyC/Hratiodifferencesbetweensamplesandstandards(seeSection5)orbythepresenceofotherheteroatoms.ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TABLE1ConcentrationsofInterferingSpeciesTheconcentrationsofsubstancesinthistableweredeterminedbythecalculationofthesumofthemassabsorptioncoefficientstimesmassfractionofeachelementpresent.Thiscalculationwasmadefordilutionsofrepresentativesamplescontainingapproximately3%ofinterferingsubstancesand0.5%sulfur.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语