Designation:D7730−17StandardTestMethodforDeterminationofDioctylSulfosuccinateinSeaWaterbyLiquidChromatography/TandemMassSpectrometry(LC/MS/MS)1ThisstandardisissuedunderthefixeddesignationD7730;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofdioctylsulfosuccinate(DOSS)inseawaterbydirectinjectionusingliquidchromatography(LC)anddetectionwithtandemmassspectrometry(MS/MS).Thisanalyteisqualitativelyandquan-titativelydeterminedbythistestmethod.Thistestmethodadherestoselectedreactionmonitoring(SRM)massspectrom-etry.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-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionand...
