基本信息
| 标准名称： | 桑蚕经纬捻线丝 |
| 中标分类： |
纺织 >>
丝纺织 >>
丝制纱、线 |
| 替代情况： | 被GB/T 14033-1992代替 |
| 发布日期： | |
| 实施日期： | 1992-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
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所属分类： 纺织 丝纺织 丝制纱 线
【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】: