ASTM D7220-2006 用偏振X-射线荧光光度法测定汽车燃料中硫含量的标准试验方法

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【英文标准名称】:StandardTestMethodforSulfurinAutomotiveFuelsbyPolarizationX-rayFluorescenceSpectrometry
【原文标准名称】:用偏振X-射线荧光光度法测定汽车燃料中硫含量的标准试验方法
【标准号】:ASTMD7220-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:机动车燃料;偏振;试验;X射线;X射线荧光;X射线荧光光谱法;X射线光度法
【英文主题词】:automotivefuel;diesel;gasoline;petroleum;polarization;spectrometry;sulfur;X-ray
【摘要】:Thistestmethodprovidesmeasurementoftotalsulfurinautomotivefuelswithaminimumofsamplepreparation.Atypicalanalysistimeis200to300spersample.Thequalityofautomotivefuelcanberelatedtotheamountofsulfurpresent.Knowledgeofsulfurconcentrationisnecessaryforprocessingpurposes.Therearealsoregulationspromulgatedinfederal,state,andlocalagenciesthatrestricttheamountofsulfurpresentinsomefuel.Ifthistestmethodisappliedtopetroleummaterialswithmatricessignificantlydifferentfromthecalibrationmaterialsspecifiedinthistestmethod,thecautionsandrecommendationsinSection6shouldbeobservedwheninterpretingtheresults.1.1Thistestmethodspecifiesanenergy-dispersiveX-rayfluorescence(EDXRF)methodforthedeterminationoftotalsulfurinautomotivefuelswithaconcentrationrangeof6mg/kgto50mg/kg.1.1.1Thepooledlimitofquantitationofthistestmethodasobtainedbystatisticalanalysisofinterlaboratorytestresultsis6mg/kgsulfur.1.2Afundamentalassumptioninthistestmethodisthatthestandardandsamplematrixiswellmatched.MatrixmismatchcanbecausedbyC/Hratiodifferencesbetweensamplesandstandardsorbythepresenceofotherheteroatoms.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thepreferredconcentrationunitsaremg/kgsulfur.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:6P.;A4
【正文语种】: