Designation:D7510−10(Reapproved2016)´1StandardPracticeforPerformingDetectionandQuantitationEstimationandDataAssessmentUtilizingDQCALCSoftware,basedonASTMPracticesD6091andD6512ofCommitteeD19onWater1,2ThisstandardisissuedunderthefixeddesignationD7510;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Reapprovedwitheditorialchangeto4.2.3inDecember2016.1.Scope1.1ThissoftwarewasdevelopedtoautomatecalculationswithinthreeASTMstandards:PracticesD2777(outlierre-movalsection),D6091,andD6512.1.2Theprogramcalculatesdetectionestimates(DE)andquantitationestimates(QE)fortheconstant,straight-line,exponential,andhybrid(Rocke-Lorenzato)modelsofthevariationof[interorintra]laboratorystandarddeviation(ILSD)withconcentration.CalculationsareshownintheDE_QEworksheetandresultsareshownintheDLs&QLsworksheet.Severalplotsaregeneratedshowinghowwelleachmodelfitsthedata.TheleastcomplexmodeltofitthedatawithadequateconfidencemustbeusedbytheASTMstandards.NOTE1—Modelingtechniquesautomatedinthispracticeandwiththissoftwarehavebeenshowntoworkwellwithmostdatasets.Usersofthissoftwarearecautionedthatwithsome,raredatasets,anomalousresultsmaybeobtained,andmanualforcingofadifferentmodelmayberequired.Ithasbeennotedthatforsomedatasetswhenanexponentialmodelisselected,theremaybealackofconvergenceonaresultortheremaybeaconvergenceontwoseparateresults.1.3UsersofDQCALCshouldrefertoPracticesD2777,D6091,andD6512forthespecificsofthescopeandapplica-tionofthePractices.1.4TheIDEPractice(D6091)andtheIQEPractice(D6512)areconcernedwithestimatesoflimitsofdetectionandlimitsofquantitationbasedoninter-laboratorydata.DQCALCmayalsobeemployedtocalculatedetectionandquantitationestimatesbasedonsinglelaboratorydata.1.5TheDQCALCSoftwareconsistsofaMicrosoftExcel3workbookspreadsheetandassociatedmacrosandausermanualinMicros...
