ASTM E925-2002 光谱狭缝宽度不超过2nm的紫外线-可见光分光光度计的校准监测的标准实施规程

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【英文标准名称】:StandardPracticeforMonitoringtheCalibrationofUltraviolet-VisibleSpectrophotometerswhoseSpectralSlitWidthdoesnotExceed2nm
【原文标准名称】:光谱狭缝宽度不超过2nm的紫外线-可见光分光光度计的校准监测的标准实施规程
【标准号】:ASTME925-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E13.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:校正;光谱测定法;测量仪器
【英文主题词】:absorbance;molecularspectroscopy;referencematerials;spectrophotometers;UV/visible;wavelength
【摘要】:Thispracticepermitsananalysttocomparetheperformanceofaninstrumenttothemanufacturer’suppliedperformancespecificationsandtoverifyitssuitabilityforcontinuedroutineuse.Italsoprovidesgenerationofcalibrationmonitoringdataonaperiodicbasis,formingabasefromwhichanychangesintheperformanceoftheinstrumentwillbeevident.1.1Thispracticecoverstheparametersofspectrophotometricperformancethatarecriticalfortestingtheadequacyofinstrumentationformostroutinetestsandmethodswithinthewavelengthrangeof200to700nmandtheabsorbancerangeof0to2.Therecommendedtestsprovideameasurementoftheimportantparameterscontrollingresultsinspectrophotometricmethods,butitisspecificallynottobeinferredthatallfactorsininstrumentperformancearemeasured.1.2Thispracticemaybeusedasasignificanttestoftheperformanceofinstrumentsforwhichthespectralslitwidthdoesnotexceed2nmandforwhichthemanufacturer'sspecificationsforwavelengthandabsorbanceaccuracydonotexceedtheperformancetolerancesemployedhere.Thispracticeemploysanillustrativetoleranceof177;1%relativefortheerroroftheabsorbancescaleovertherangeof0.2to2.0,andof1.0nmfortheerrorofthewavelengthscale.Asuggestedmaximumstrayradiantpowerratioof4x10-4yields