Designation:D6160−21StandardTestMethodforDeterminationofPolychlorinatedBiphenyls(PCBs)inWasteMaterialsbyGasChromatography1ThisstandardisissuedunderthefixeddesignationD6160;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethod2coversatwo-tieredanalyticalap-proachtoPCBscreeningandquantitationofliquidandsolidwastes,suchasoils,sludges,aqueoussolutions,andotherwastematrices.1.2TierIisdesignedtoscreensamplesrapidlyforthepresenceofPCBs.1.3TierIIisusedtodeterminetheconcentrationofPCBs,typicallyintherangeoffrom2mg⁄kgto50mg⁄kg.PCBconcentrationsgreaterthan50mg/kgaredeterminedthroughanalysisofsampledilutions.1.4Thisisapatternrecognitionapproach,whichdoesnottakeintoaccountindividualcongenersthatmightoccur,suchasinreactionby-products.ThistestmethoddescribestheuseofAroclors31016,1221,1232,1242,1248,1254,1260,1262,and1268,asreferencestandards,butotherscouldalsobeincluded.Aroclors1016and1242havesimilarcapillarygaschromatography(GC)patterns.InterferencesorweatheringareespeciallyproblematicwithAroclors1016,1232,and1242andmaymakedistinctionbetweenthethreedifficult.1.5Thistestmethodprovidessamplecleanupandinstru-mentalconditionsnecessaryforthedeterminationofAroclors.Gaschromatography(GC)usingcapillarycolumnseparationtechniqueandelectroncapturedetector(ECD)aredescribed.Otherdetectors,suchasatomicemissiondetector(AED)andmassspectrometry(MS),maybeusedifsufficientperformance(forexample,sensitivity)isdemonstrated.FurtherdetailsabouttheuseofGCandECDareprovidedinPracticesE355,E697,andE1510.1.6Quantitativeresultsarereportedonthedryweightsofwastesamples.1.7Quantificationlimitswillvarydependingonthetypeofwastestreambeinganalyzed.1.8ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.9Thisstandarddoesnotpurporttoaddr...
