Designation:D7574−09StandardTestMethodforDeterminationofBisphenolAinEnvironmentalWatersbyLiquidChromatography/TandemMassSpectrometry1ThisstandardisissuedunderthefixeddesignationD7574;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisprocedurecoversthedeterminationofbisphenolA(BPA)extractedfromwaterutilizingsolidphaseextraction(SPE),separatedusingliquidchromatography(LC)andde-tectedwithtandemmassspectrometry(MS/MS).BPAisqualitativelyandquantitativelydeterminedbythismethod.Thismethodadherestomultiplereactionmonitoring(MRM)massspectrometry.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Themethoddetectionlimit(MDL)andreportinglimit(RL)forBPAarelistedinTable1.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD3694PracticesforPreparationofSampleContainersandforPreservationofOrganicConstituentsD3856GuideforManagementSystemsinLaboratoriesEngagedinAnalysisofWaterD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisD5905PracticeforthePreparationofSubstituteWastewater3.Terminology3.1Definitions:3.1.1environmentalwater,n—effluentsfromsecondaryandtertiarypubliclyownedtreatmentworks(POTW),freshsur-faceandgroundwater.3.2Abbreviations:3.2.1ppt—partspertrillion,ng/L4.SummaryofTestMethod4.1Thisisaperformancebasedmethodandmodificationsareallowedtoimproveperformance.4.2Solidphaseextractionisusedtoextractwatersamples.4.2.1SolidPhaseExtraction—250millilitervolumeofsampleadjustedtopH2isextractedusingasolidphasee...
