Designation:D7730−11StandardTestMethodforDeterminationofDioctylSulfosuccinateinSeaWaterbyLiquidChromatography/TandemMassSpectrometry(LC/MS/MS)1ThisstandardisissuedunderthefixeddesignationD7730;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisprocedurecoversthedeterminationofdioctylsulfosuccinate(DOSS)inseawaterbydirectinjectionusingliquidchromatography(LC)anddetectionwithtandemmassspectrometry(MS/MS).Thisanalyteisqualitativelyandquan-titativelydeterminedbythismethod.Thismethodadherestoselectedreactionmonitoring(SRM)massspectrometry.1.2TheDetectionVerificationLevel(DVL)andReportingRangeforDOSSarelistedinTable1.1.2.1TheDVLisrequiredtobeataconcentrationatleast3timesbelowtheReportingLimit(RL)andhaveasignal/noiseratiogreaterthan3:1.Fig.1andFig.2displaythesignal/noiseratiooftheselectedreactionmonitoring(SRM)transition.1.2.2ThereportinglimitistheconcentrationoftheLevel1calibrationstandardasshowninTable5forDOSS,takingintoaccountthe50%samplepreparationdilutionfactor.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWater2.2OtherStandards:3EPApublicationSW-846,TestMethodsforEvaluatingSolidWaste,Physical/ChemicalMethods3.Terminology3.1Definitions:3.1.1detectionverificationlevel,DVL,n—aconcentrationthathasasignal/noiseratiogreaterthan3:1andisatleast3timesbelowtheReportingLimit(RL).3.1.2reportinglimit,RL,n—the...
