【英文标准名称】:StandardGuideforRamanShiftStandardsforSpectrometerCalibration
【原文标准名称】:分光剂校准RAMAN转换标准的标准指南
【标准号】:ASTME1840-1996(2007)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:E13.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Ramanspectroscopy;wavenumbercalibration
【摘要】:WavenumbercalibrationisanimportantpartofRamananalysis.ThecalibrationofaRamanspectrometerisperformedorcheckedfrequentlyinthecourseofnormaloperationandevenmoreoftenwhenworkingathighresolution.Todate,themostcommonsourceofwavenumbervaluesiseitheremissionlinesfromlow-pressuredischargelamps(forexample,mercury,argon,orneon)orfromthenon-lasingplasmalinesofthelaser.Thereareseveralgoodcompilationsofthesewell-establishedvalues(1-8).3Thedisadvantagesofusingemissionlinesarethatitcanbedifficulttoalignlampsproperlyinthesamplepositionandthelaserwavelengthmustbeknownaccurately.Withargon,krypton,andotherionlaserscommonlyusedforRamanthelatterisnotaproblembecauselasingwavelengthsarewellknown.Withtheadventofdiodelasersandotherwavelength-tunablelasers,itisnowoftenthecasethattheexactlaserwavelengthisnotknownandmaybedifficultortime-consumingtodetermine.Inthesesituationsitismoreconvenienttousesamplesofknownrelativewavenumbershiftforcalibration.Unfortunately,accuratewavenumbershiftshavebeenestablishedforonlyafewchemicals.ThisguideprovidestheRamanspectroscopistwithaverageshiftvaluesdeterminedinsevenlaboratoriesforsevenpurecompoundsandoneliquidmixture.1.1ThisguidecoversRamanshiftvaluesforcommonliquidandsolidchemicalsthatcanbeusedforwavenumbercalibrationofRamanspectrometers.TheguidedoesnotincludeproceduresforcalibratingRamaninstruments.Instead,thisguideprovidesreliableRamanshiftvaluesthatcanbeusedasacomplementtolow-pressurearclampemissionlineswhichhavebeenestablishedwithahighdegreeofaccuracyandprecision.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Someofthechemicalsspecifiedinthisguidemaybehazardous.Itistheresponsibilityoftheuserofthisguidetoconsultmaterialsafetydatasheetsandotherpertinentinformationtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortotheiruse.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H10
【国际标准分类号】:17_180_30
【页数】:11P.;A4
【正文语种】:
基本信息
标准名称: | 进出口食品中大肠菌群、粪大肠菌群和大肠杆菌检测方法 |
替代情况: | 替代SN/T 0169-1992;SN 0333-1994;SN/T 1059.2-2002 |
发布部门: | 中华人民共和国国家质量监督检验检疫总局 |
发布日期: | 2010-11-01 |
实施日期: | 2011-05-01 |
首发日期: | |
作废日期: | |
主管部门: | 国家认证认可监督管理委员会 |
归口单位: | 国家认证认可监督管理委员会 |
出版社: | 中国标准出版社 |
出版日期: | 2011-05-01 |
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所属分类: 医药 卫生 劳动保护 医药 卫生 劳动保护综合 医学 医药卫生技术 医学科学和保健装置综合