EPA Method 8011 1,2-Dibromoethane and 1,2-Dibromo-3-chloropropane

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1、METHOD80111,2-DIBROMOETHANEAND1,2-DIBROMO-3-CHLOROPROPANEBYMICROEXTRACTIONANDGASCHROMATOGRAPHY1.0SCOPEANDAPPLICATION1.1Thismethodisapplicabletothedeterminationofthefollowingcompoundsindrinkingwaterandgroundwater:_________________________________________________________________aCompou

2、ndNameCASNo.1,2-Dibromoethane(EDB)106-93-41,2-Dibromo-3-chloropropane(DBCP)96-12-8_________________________________________________________________aChemicalAbstractServicesRegistryNumber.1.2ForcompoundsandmatricesotherthanthoselistedinSection1.1,thelaboratorymustdemonstratetheusefuln

3、essofthemethodbycollectingprecisionandaccuracydataonactualsamplesandprovidequalitativeconfirmationofresultsbygaschromatography/massspectrometry(GC/MS).1.3Theexperimentallydeterminedmethoddetectionlimits(MDL)forEDBandDBCPwerecalculatedtobe0.01µg/L.Themethodhasbeenshowntobeusefulforthe

4、seanalytesoveraconcentrationrangeofapproximately0.03to200µg/L.Actualdetectionlimitsarehighlydependentuponthecharacteristicsofthegaschromatographicsystem,samplematrix,andcalibration.1.4ThismethodisrestrictedtousebyorundertheSupervisionofanalystsexperiencedintheuseofgaschromatographyan

5、dintheinterpretationofgaschromatograms.EachanalystmustdemonstratetheabilitytogenerateacceptableresultswiththismethodusingtheproceduredescribedinSection8.2.1.51,2-Dibromoethaneand1,2-Dibromo-3-chloropropanehavebeententativelyclassifiedasknownorsuspectedhumanormammaliancarcinogens.Pure

6、standardmaterialsandstockstandardsolutionsofthesecompoundsshouldbehandledinahood.ANIOSH/MESAapprovedtoxicgasrespiratorshouldbewornwhentheanalysthandleshighconcentrationsofthesetoxiccompounds.2.0SUMMARYOFMETHOD2.1ThirtyfivemLofsampleareextractedwith2mLofhexane.TwoµLoftheextractarethen

7、injectedintoagaschromatographequippedwithalinearizedelectroncapturedetectorforseparationandanalysis.Aqueousmatrixspikesareextractedandanalyzedinanidenticalmannerasthesamplesinordertocompensateforpossibleextractionlosses.CD-ROM8011-1Revision0July19922.2Theextractionandanalysistimeis30

8、to50minutesp