ASTM D7011-2004 用气相色谱法和硫的选择性检测测定精炼苯中痕量噻吩的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofTraceThiopheneinRefinedBenzenebyGasChromatographyandSulfurSelectiveDetection
【原文标准名称】:用气相色谱法和硫的选择性检测测定精炼苯中痕量噻吩的标准试验方法
【标准号】:ASTMD7011-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D16.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:atomicemissiondetector;benzene;chemiluminescencedetector;gaschromatography;pulsedflamephotometricdetector;sulfur;thiophene
【摘要】:Accurategaschromatographicdeterminationoftracelevelsofthiopheneinbenzeneinvolvesspecialanalyticalproblemsbecauseofthedifficultiesoftracelevelanalysis.Theseproblemsarisefromthelowconcentrationlevelsthatneedtobemeasured,thetypeofcolumnanddetectorneededforanalysis,andthepotentialinterferencefromthebenzenematrix.ThistestmethodwasfoundapplicablefordeterminingthiopheneinrefinedbenzeneconformingtothespecificationsdescribedinSpecificationsD2359,D4734,andD5871andmaybeapplicabletowardothergradesofbenzeneiftheuserhastakenthenecessaryprecautionsasdescribedinthetext.ThistestmethodwasdevelopedasanalternativetechniquetoTestMethodsD1685andD4735.1.1Thistestmethodcoversthedeterminationofthiopheneinrefinedbenzeneusinggaschromatographyandsulfurselectivedetection.Thetestmethodisapplicabletothedeterminationofthiopheneatlevelsof0.02to2mg/kgthiopheneinbenzene.1.2Indeterminingtheconformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:G16
【国际标准分类号】:75_160_20
【页数】:6P.;A4
【正文语种】: