作者:标准资料网 时间:2024-05-17 06:34:05   浏览:8146   来源:标准资料网

【英文标准名称】:StandardTestMethodforAnalysisofCyclohexanebyGasChromatography(ExternalStandard)
【原文标准名称】:环己烷气相色谱分析(外部标准)的标准试验方法
【标准号】:ASTMD7266-2007e1
【标准状态】:现行
【国别】:美国
【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】:D16.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:analysisbygaschromatography;benzene;cyclohexane;Cyclohexane;Gaschromatography(GC)
【摘要】:ThistestmethodissuitableforsettingspecificationsonthematerialsreferencedinTable1andforuseasaninternalqualitycontroltoolwherecyclohexaneisproducedorisusedinamanufacturingprocess.Itmayalsobeusedindevelopmentorresearchworkinvolvingcyclohexane.Thistestmethodisusefulindeterminingthepurityofcyclohexanewithnormalimpuritiespresent.Ifextremelyhighboilingorunusualimpuritiesarepresentinthecyclohexane,thistestmethodwouldnotnecessarilydetectthemandthepuritycalculationwouldbeerroneous.1.1Thistestmethodcoversthedeterminationofthepurityofcyclohexanebygaschromatography.Calibrationofthegaschromatographysystemisdonebytheexternalstandardcalibrationtechnique.1.2ThistestmethodhasbeenfoundapplicabletothemeasurementofimpuritiessuchasthosefoundinTable1,whichareimpuritiesthatmaybefoundincyclohexane.Theimpuritiescanbeanalyzedoverarangeof5to180mg/kgbythismethod,butmaybeapplicabletoawiderrange.1.3Thelimitofdetectionis1mg/kg.1.4Indeterminingtheconformanceofthetestresultsusingthistestmethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:G17
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语