【英文标准名称】:StandardPracticefor99%/95%InterlaboratoryDetectionEstimate(IDE)forAnalyticalMethodswithNegligibleCalibrationError
【原文标准名称】:带可忽略校准误差的分析方法用99%95%试验室间检测评估(IDE)的标准实施规程
【标准号】:ASTMD6091-2007
【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】:D19.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分析方法;校准;校准误差;检测;评估;实验室;实验室法
【英文主题词】:criticallimit;detection;detectionlimit;falsedetection;falsenondetection;falsepositive;matrixeffects;statisticaltolerancelimit;truedetection;truenondetection
【摘要】:AppropriateapplicationofthispracticeshouldresultinanIDEachievablebymostlaboratoriesproperlyusingthetestmethodstudied.ThisIDEprovidesthebasisforanyprospectiveuseofthetestmethodbyqualifiedlaboratoriesforreliabledetectionoflow-levelconcentrationsofthesameanalyteastheonestudiedinthispracticeandsamemedia(matrix).TheIDEvaluesmaybeusedtocomparethedetectionpowerofdifferentmethodsforanalysisofthesameanalyteinthesamematrix.TheIDEprovideshighprobability(approximately95%)thatresultvaluesofthemethodstudiedwhichexceedtheIDErepresentpresenceofanalyteinthesampleandhighprobability(approximately99%)thatblanksampleswillnotresultinadetection.TheIDEprocedureshouldbeusedtoestablishtheinterlaboratorydetectioncapabilityforanyapplicationofamethodwhereinterlaboratorydetectionisimportanttodatause.TheintentofIDEisnottosetreportinglimits.1.1Thispracticeestablishesastandardforcomputinga99%/95%InterlaboratoryDetectionEstimate(IDE)andprovidesguidanceconcerningtheappropriateuseandapplication.ThecalculationsinvolvedinthispracticecanbeperformedwithDQCALC,MicrosoftExcel-basedsoftwareavailablefromASTM.1.2TheIDEiscomputedtobethelowestconcentrationatwhichthereis90%confidencethatasinglemeasurementfromalaboratoryselectedfromthepopulationofqualifiedlaboratoriesrepresentedinaninterlaboratorystudywillhaveatruedetectionprobabilityofatleast95%andatruenondetectionprobabilityofatleast99%(whenmeasuringablanksample).1.3Thefundamentalassumptionofthecollaborativestudyisthatthemediatested,theconcentrationstested,andtheprotocolfollowedinthestudyprovidearepresentativeandfairevaluationofthescopeandapplicabilityofthetestmethodaswritten.Whenproperlyapplied,theIDEprocedureensuresthatthe99%/95%IDEhasthefollowingproperties:1.3.1RoutinelyAchievableIDEValue8212;MostlaboratoriesareabletoattaintheIDEdetectionperformanceinroutineanalyses,usingastandardmeasurementsystem,atreasonablecost.Thispropertyisneededforadetectionlimittobepracticallyfeasible.RepresentativelaboratoriesmustbeincludedinthedatatocalculatetheIDE.1.3.2RoutineSourcesofErrorAccountedfor8212;TheIDEshouldrealisticallyincludesourcesofbiasandvariationwhicharecommontothemeasurementprocess.Thesesourcesinclude,butarenotlimitedto:intrinsicinstrumentnoise,sometypicalamountofcarryovererror,plusdifferencesinlaboratories,analysts,samplepreparation,andinstruments.1.3.3AvoidableSourcesofErrorExcluded8212;TheIDEshouldrealisticallyexcludeavoidablesourcesofbiasandvariation,thatis,thosewhichcanreasonablybeavoidedinroutinefieldmeasurements.Avoidablesourceswouldinclude,butarenotlimitedto:modificationstothesample,measurementprocedure,ormeasurementequipmentofthevalidatedmethod,andgrossandeasilydiscernibletranscriptionerrors(providedtherewasawaytodetectandeithercorrectoreliminatethem).1.3.4LowProbabilityofFalseDetection8212;TheIDEisatrueconcentrationconsistentwithameasuredconcentrationthreshold(criticalmeasuredvalue)thatwillprovideahighprobability,99%,oftruenondetection(alowprobabilityoffalsedetection,945;=1%).Thus,whenmeasuringablanksample,theprobabilityofnotdetectingtheanalytewouldbe99%.Tobeuseful,thismustbedemonstratedfortheparticularmatrixbeingused,andnotjustforreagentwater.1.3.5LowProbabilityofFalseNondetection8212;TheIDEshouldbeatrueconcentrationatwhichthereisahighprobability,atleast95%,oftruedetection(a......
【中国标准分类号】:A50
【国际标准分类号】:17_020
【页数】:13P.;A4
【正文语种】:


【英文标准名称】:Acoustics--Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure--Engineeringmethodinanessentiallyfreefieldoverareflectingplane
【原文标准名称】:声学.利用声压测定噪声源的音响功率级.反射平面上基本自由声波场的工程测量法
【标准号】:JISZ8733-2000
【标准状态】:现行
【国别】:日本
【发布日期】:2000-05-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonBasicEngineering
【标准类型】:()
【标准水平】:()
【中文主题词】:声强;音调;噪声(环境的);声学测量;音量;声源
【英文主题词】:acousticmeasurement;volume(sound);pitch(sound);soundintensity;soundsources;noise(environmental)
【摘要】:この規格は,騒音源から発生する音の音響バワーレべル又は音響エネルギーレべルを算出するために,無響室又は半無昇室において騒音源を囲む測定面上で音圧レべルを測定する方法を規定する。
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:46P;A4
【正文语种】:日语