WPCF mw9ԋ=4O'hiσ6yVr~e<.` SuvA}VUNvPJ#-"d˯: I[:YUHoI rNNn=Z7D_\_[NXb\Bfr$`u`4=TLNṕ~wȕ뚴J" j8]<"a/n:d{ |k7GL:i|.7ߢߙ?,.DRJH8~\"BSB$jKtf^2R磒pKKXb|,*=L>cB#˗]8B~ 9ڤLj"~`*.ZW3ĺ|;ro)nn^ cؚ&'0[Nh{ZZE-!'GF j:*'@W #UNy % 0:N^ w4- m/#|xHP LaserJet 2200 Series PCL 60(9 Z6Times New Roman RegularX($USUS.,jm- V,ertyBar$ΤU !USUS.,  _TITLE  AnalysisofModifiedMethodFiveTrainSamplesforMultiple  PollutantClasses  AUTHOR(S) L  LarryD.Johnson 8  PERFORMINGORGANIZATIONNAMEANDADDRESS  ` NationalExposureResearchLaboratory  L  OfficeofResearchandDevelopment  8  U.S.EnvironmentalProtectionAgency $  ResearchTrianglePark,NC27711   SPONSORINGAGENCYNAMEANDADDRESS   NationalExposureResearchLaboratory   OfficeofResearchandDevelopment p U.S.EnvironmentalProtectionAgency \ ResearchTrianglePark,NC27711 H ABSTRACT  p ЀThesteadilyincreasingneedformorecomplete  \ characterizationofstationarysourceemissionshasplacedmore H demandsonstacksamplingorganizationsandonassociated 4 analyticallaboratoriestooperateasefficientlyaspossible.One   wayofincreasingefficiencyistomaximizetheamountofanalysis   oneachsamplecollected,andtherebytominimizethenumberof  samplestaken.TheModifiedMethod5(MM5)samplingmethod  producessampleswhichareparticularlyamenabletoanalysisfor  multipleorganicpollutants.Successinexecutingacombinationof l twoormoremethodsrequiresathoroughknowledgeofthesampling X  methodaswellastheanalysisprocedures.Althoughverbal D! directionhasbeenofferedtoindividuals,nopublishedtechnical 0"  guidancehasbeenavailable.Thispaperdiscussesbasicprinciples #l! ofplanninganalysisofMM5samplesformorethanoneclassof $X" pollutants.Benefitsandliabilitiesofcombinationsofthis $D # natureareexamined.Anexamplecaseinvolvinganalysisof_dioxins_ %0!$ and_polycyclic_Ԁaromatichydrocarbonsispresented. &"%