EPA Method 8061A Phthalate Esters by Gas Chromatography

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1、METHOD8061APHTHALATEESTERSBYGASCHROMATOGRAPHYWITHELECTRONCAPTUREDETECTION(GC/ECD)1.0SCOPEANDAPPLICATION1.1Method8061isusedtodeterminetheidentitiesandconcentrationsofvariousphthalateestersinaqueousandsolidmatricesincludinggroundwater,leachate,soil,sludgeandsediment.Thefollowingcompoundscanbed

2、eterminedbythismethod:______________________________________________________________________________aCompoundNameCASNo.Benzylbenzoate(Int.Std.)120-51-4Bis(2-ethylhexyl)phthalate117-81-7Butylbenzylphthalate85-68-7Di-n-butylphthalate84-74-2Diethylphthalate84-66-2Dimethylphthalate131-11-3Di-n-o

3、ctylphthalate117-84-0______________________________________________________________________________aChemicalAbstractServiceRegistryNumber.1.2Table1liststhemethoddetectionlimits(MDLs)forthetargetanalytesinawatermatrix.TheMDLsforthecomponentsofaspecificsamplemaydifferfromthoselistedinTable1bec

4、auseMDLsdependonthenatureofinterferencesinthesamplematrix.Table2liststheestimatedquantitationlimits(EQLs)forothermatrices.1.3Thefollowingcompoundsmayalsobeanalyzedbythisprocedureormaybeusedassurrogates:aCompoundNameCASNo.Bis(2-n-butoxyethyl)phthalate117-83-9Bis(2-ethoxyethyl)phthalate605-54-

5、9Bis(2-methoxyethyl)phthalate117-82-8Bis(4-methyl-2-pentyl)phthalate146-50-9Diamylphthalate131-18-0Dicyclohexylphthalate84-61-7Dihexylphthalate84-75-3Diisobutylphthalate84-69-5Dinonylphthalate84-76-4Hexyl2-ethylhexylphthalate75673-16-41.4Whenthismethodisusedtoanalyzeforanyorallofthetargetana

6、lytes,compoundidentificationshouldbesupportedbyatleastoneadditionalqualitativetechnique.Thismethoddescribesconditionsforparallelcolumn,dualelectroncapturedetectoranalysiswhichfulfillstheaboverequirement.Retentiontimeinformationobtainedontwomegaborefused-silicaopentubularCD-ROM8061A-1Revision

7、1December1996columnsisgiveninTable1.Alternatively,gaschromatography/massspectrometrycouldbeusedforcompoundconfirmation.1.5PhthalateesterswillhydrolyzebelowpH5andabovepH7.TheamountofhydrolysiswillincreasewithincreasingordecreasingpHandwithlongercont