EPA METHOD 550 Determination of Polycyclic Aromatic Hydrocarbons in

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1、METHOD550DETERMINATIONOFPOLYCYCLICAROMATICHYDROCARBONSINDRINKINGWATERBYLIQUID-LIQUIDEXTRACTIONANDHPLCWITHCOUPLEDULTRAVIOLETANDFLUORESCENCEDETECTIONJuly1990J.W.HodgesonW.J.Bashe(TechnologyApplicationsInc.)T.V.Baker(TechnologyApplicationsInc.)ENVIRONMENTALMON

2、ITORINGSYSTEMSLABORATORYOFFICEOFRESEARCHANDDEVELOPMENTU.S.ENVIRONMENTALPROTECTIONAGENCYCINCINNATI,OHIO45268550-1METHOD550DETERMINATIONOFPOLYCYCLICAROMATICHYDROCARBONSINDRINKINGWATERBYLIQUID-LIQUIDEXTRACTIONANDHPLCWITHCOUPLEDULTRAVIOLETANDFLUORESCENCEDETECTI

3、ON1.0SCOPEANDAPPLICATION1.1Thismethoddescribesaprocedurefordeterminationofcertainpolycyclicaromatichydrocarbons(PAH)indrinkingwatersourcesandfinisheddrinkingwater.Thefollowinganalytescanbedeterminedbythismethod:ChemicalAbstractServicesAnalyteRegistryNumberA

4、cenaphthene83-32-9Acenaphthylene208-96-8Anthracene120-12-7Benzo(a)anthracene56-55-3Benzo(a)pyrene50-32-8Benzo(b)fluoranthene205-99-2Benzo(g,h,i)perylene191-24-2Benzo(k)fluoranthene207-08-9Chrysene218-01-9Dibenzo(a,h)anthracene53-70-3Fluoranthene206-44-0Fluo

5、rene86-73-7Indeno(1,2,3-cd)pyrene193-39-05Naphthalene91-20-3Phenanthrene85-01-8Pyrene129-00-01.2Thisisahighperformanceliquidchromatography(HPLC)methodapplicabletothedeterminationofthecompoundslistedabove.Whenthismethodisusedtoanalyzeunfamiliarsamples,compou

6、ndidentificationsshouldbesupportedbyatleastonequalitativetechnique.Method525providesgaschromatographic/massspectrometer(GC/MS)conditionsappropriateforthequalitativeandquantitativeconfirmationofresultsfortheaboveanalytes,usingtheextractproducedbythismethod.1

7、1.3Themethoddetectionlimit(MDL,definedinSection13.0)foreachanalyteislistedinTable1.TheMDLforaspecificmatrixmaydifferfromthoselisted,dependingonthenatureofinterferencesinthesamplematrix.550-22.0SUMMARYOFMETHOD2.1Ameasuredvolumeofsample,approximately1L,isseri

8、allyextractedwithmethylenechlorideusingaseparatoryfunnel.Themethylenechlorideextractisdriedandconcentratedtoavolumeof1mL.A3.0mLportionofacetonitrileisaddedtotheextractandconcentratedtoafinalvolumeof0.5