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【英文标准名称】:StandardTestMethodforDeterminationofTraceThiopheneinRefinedBenzenebyGasChromatographyandSulfurSelectiveDetection
【原文标准名称】:气相色谱法和硫选择性检测法测定精炼苯中的痕量噻吩的标准试验方法
【标准号】:ASTMD7011-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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;Sulfurselectivedetection;Thiophenecontent;Gaschromatography(GC);Refinedbenzene
【摘要】:Accurategaschromatographicdeterminationoftracelevelsofthiopheneinbenzeneinvolvesspecialanalyticalproblemsbecauseofthedifficultiesoftracelevelanalysis.Theseproblemsarisefromthelowconcentrationlevelsthatneedtobemeasured,thetypeofcolumnanddetectorneededforanalysis,andthepotentialinterferencefromthebenzenematrix.ThistestmethodwasfoundapplicablefordeterminingthiopheneinrefinedbenzeneconformingtothespecificationsdescribedinSpecificationsD2359,D4734,andD5871andmaybeapplicabletowardothergradesofbenzeneiftheuserhastakenthenecessaryprecautionsasdescribedinthetext.ThistestmethodwasdevelopedasanalternativetechniquetoTestMethodsD1685andD4735.1.1Thistestmethodcoversthedeterminationofthiopheneinrefinedbenzeneusinggaschromatographyandsulfurselectivedetection.Thetestmethodisapplicabletothedeterminationofthiopheneatlevelsof0.02to2.18mgthiopheneperkginbenzene(mg/kg)ontheAED,0.03to1.87mg/kgonthePFPD,and0.03to2.11mg/kgontheSCD.Therangeofthetestmethodmaybeextendedbymodifyingthesampleinjectionvolume,splitratios,calibrationrange,orsampledilutionwiththiophene-freesolvent.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】:7P.;A4
【正文语种】:英语