ASTM E385-2007 使用14兆电子伏特的中子活化和直接计数技术测定氧含量的标准试验方法
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【英文标准名称】:StandardTestMethodforOxygenContentUsinga14-MeVNeutronActivationandDirect-CountingTechnique
【原文标准名称】:使用14兆电子伏特的中子活化和直接计数技术测定氧含量的标准试验方法
【标准号】:ASTME385-2007
【标准状态】:现行
【国别】:
【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】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含量测定;中子;核能;核技术;氧;含氧量;测试
【英文主题词】:direct-counting;oxygen;density;neutron
【摘要】:Theconventionaldeterminationofoxygencontentinliquidorsolidsamplesisarelativelydifficultchemicalprocedure.Itisslowandusuallyoflimitedsensitivity.The14-MeVneutronactivationanddirectcountingtechniqueprovidesarapid,highlysensitive,nondestructiveprocedureforoxygendeterminationinawiderangeofmatrices.Thistestmethodisindependentofthechemicalformoftheoxygen.Thistestmethodcanbeusedforqualityandprocesscontrolinthemetals,coal,andpetroleumindustries,andforresearchpurposesinabroadspectrumofapplications.1.1Thistestmethodcoversthemeasurementofoxygenconcentrationinalmostanymatrixbyusinga14-MeVneutronactivationanddirect-countingtechnique.Essentially,thesamesystemmaybeusedtodetermineoxygenconcentrationsrangingfromover50%toabout10g/g,orless,dependingonthesamplesizeandavailable14-MeVneutronfluencerates.Note1-Therangeofanalysismaybeextendedbyusinghigherneutronfluencerates,largersamples,andhighercountingefficiencydetectors.1.2Thistestmethodmaybeusedoneithersolidorliquidsamples,providedthattheycanbemadetoconforminsize,shape,andmacroscopicdensityduringirradiationandcountingtoastandardsampleofknownoxygencontent.Severalvariantsofthismethodhavebeendescribedinthetechnicalliterature.Amonographisavailablewhichprovidesacomprehensivedescriptionoftheprinciplesofactivationanalysisusinganeutrongenerator(1).1.3ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedseparatelyasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionsaregiveninSection8.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:8P.;A4
【正文语种】:
【原文标准名称】:使用14兆电子伏特的中子活化和直接计数技术测定氧含量的标准试验方法
【标准号】:ASTME385-2007
【标准状态】:现行
【国别】:
【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】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含量测定;中子;核能;核技术;氧;含氧量;测试
【英文主题词】:direct-counting;oxygen;density;neutron
【摘要】:Theconventionaldeterminationofoxygencontentinliquidorsolidsamplesisarelativelydifficultchemicalprocedure.Itisslowandusuallyoflimitedsensitivity.The14-MeVneutronactivationanddirectcountingtechniqueprovidesarapid,highlysensitive,nondestructiveprocedureforoxygendeterminationinawiderangeofmatrices.Thistestmethodisindependentofthechemicalformoftheoxygen.Thistestmethodcanbeusedforqualityandprocesscontrolinthemetals,coal,andpetroleumindustries,andforresearchpurposesinabroadspectrumofapplications.1.1Thistestmethodcoversthemeasurementofoxygenconcentrationinalmostanymatrixbyusinga14-MeVneutronactivationanddirect-countingtechnique.Essentially,thesamesystemmaybeusedtodetermineoxygenconcentrationsrangingfromover50%toabout10g/g,orless,dependingonthesamplesizeandavailable14-MeVneutronfluencerates.Note1-Therangeofanalysismaybeextendedbyusinghigherneutronfluencerates,largersamples,andhighercountingefficiencydetectors.1.2Thistestmethodmaybeusedoneithersolidorliquidsamples,providedthattheycanbemadetoconforminsize,shape,andmacroscopicdensityduringirradiationandcountingtoastandardsampleofknownoxygencontent.Severalvariantsofthismethodhavebeendescribedinthetechnicalliterature.Amonographisavailablewhichprovidesacomprehensivedescriptionoftheprinciplesofactivationanalysisusinganeutrongenerator(1).1.3ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedseparatelyasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionsaregiveninSection8.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:8P.;A4
【正文语种】:
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