【英文标准名称】:StandardPracticeforMeasuringPracticalSpectralBandwidthofUltraviolet-VisibleSpectrophotometers
【原文标准名称】:紫外线-可见分光光度计的实用光谱带宽的测量
【标准号】:ASTME958-1993(2005)
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:测量;光谱测定法;频带宽度;光谱学;测量仪器;紫外线;试验设备
【英文主题词】:molecularspectroscopy;ultraviolet-visiblespectrophotometers;spectralbandwidth
【摘要】:Thispracticeshouldbeusedbyapersonwhodevelopsananalyticalmethodtoensurethatthespectralbandwidthscitedinthepracticeareactuallytheonesused.Note18212;Themethoddevelopershouldestablishthespectralbandwidthsthatcanbeusedtoobtainsatisfactoryresults.Thispracticeshouldbeusedtodeterminewhetheraspectralbandwidthspecifiedinamethodcanberealizedwithagivenspectrophotometerandthuswhethertheinstrumentissuitableforuseinthisapplication.Thispracticeallowstheuserofaspectrophotometertodeterminetheactualspectralbandwidthoftheinstrumentunderagivensetofconditionsandtocomparetheresulttothespectralbandwidthcalculatedfromdatagiveninthemanufacturerrsquo;literatureorindicatedbytheinstrument.Instrumentmanufacturerscanusethispracticetomeasureanddescribethepracticalspectralbandwidthofaninstrumentoveritsentirewavelengthoperatingrange.Thispracticeishighlypreferedtothegeneralpracticeofstatingthelimitingorthetheoreticalspectralbandwidthatasinglewavelength.1.1Thispracticedescribesaprocedureformeasuringthepracticalspectralbandwidthofaspectrophotometerinthewavelengthregionof185to820nm.Practicalspectralbandwidthisthespectralbandwidthofaninstrumentoperatedatagivenintegrationperiodandagivensignal-to-noiseratio.1.2Thispracticeisapplicabletoinstrumentsthatutilizeservo-operatedslitsandmaintainaconstantperiodandaconstantsignal-to-noiseratioasthewavelengthisautomaticallyscanned.Itisalsoapplicabletoinstrumentsthatutilizefixedslitsandmaintainaconstantservoloopgainbyautomaticallyvaryinggainordynodevoltage.Inthislattercase,thesignal-to-noiseratiovarieswithwavelength.Itcanalsobeusedoninstrumentsthatutilizesomecombinationofthetwodesigns,aswellasonthosethatvarytheperiodduringthescan.Fordigitizedinstruments,refertothemanufacturer''smanual.1.3Thispracticedoesnotcoverthemeasurementoflimitingspectralbandwidth,definedastheminimumspectralbandwidthachievableunderoptimumexperimentalconditions.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N30
【国际标准分类号】:17_180_30
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:MethodsofSamplingIndustrialWater
【原文标准名称】:热沥青的矿物质粘合的标准试验方法
【标准号】:ASTMD510-1968
【标准状态】:作废
【国别】:
【发布日期】:1968
【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】:
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:粘附;试验
【英文主题词】:
【摘要】:
【中国标准分类号】:E43
【国际标准分类号】:
【页数】:
【正文语种】: