WPCF  l@̼~RseY ](÷l)ήJ1zQɈDj"AhnJ ̴#9BP!-3_AJ~b@tXp$>Ǝ`3~晝gwK:~|1J WK ݥXYu䦙XJƍYVzQ .3v촏זŴ`VpoxZ+g΃ˀ/᭏Tm%Byn~4ԳW?L6D6p#0}WAyb?/~ӵcy"\Q&kڬbO&{ki3[UUo6q5S[BCK^9l-#̤yʭ+S<|* o­dV:(~ ٯKie #UNy % 0:N^ w4- m/#|xHP LaserJet 2200 Series PCL 60(9 Z6Times New Roman RegularX($USUS.,Skm- V,ertyBarTU !USUS.,  _TITLE  MethodEvaluationStudy:theApplicationof_VOST_Ԁtothe  _Nonhalogenated_Ԁ_Semivolatile_ԀOrganicCompoundsfromtheCleanAir  ActAmendments t AUTHOR(S) L  MerrillD.Jackson,JamesF._McGaughey_,RaymondG.Merrill,and 8  JoanT._Bursey_ $ t PERFORMINGORGANIZATIONNAMEANDADDRESS  L  RadianCorporation  8  P.O.Box13000 $  ResearchTrianglePark,NC27709   SPONSORINGAGENCYNAMEANDADDRESS   NationalExposureResearchLaboratory   OfficeofResearchandDevelopment p U.S.EnvironmentalProtectionAgency \ ResearchTrianglePark,NC27711 H ABSTRACT  p Alaboratorystudyandtwofieldstudieswereperformedtoevaluate  \ theapplicationoftheVolatileOrganicSamplingTrain(_VOST_,EPA H Method0030)tothevolatile_halogenated_Ԁorganiccompounds 4 (approximately35compounds)listedintheCleanAirActAmendments   (_CAAA_)of1990.Subsequently,alaboratorystudywasperformedto   _asses_Ԁthefeasibilityoftheapplicationofthe_VOST_Ԁmethodologyto  thevolatile_nonhalogenated_Ԁorganiccompoundslistedinthe_CAAA_  (approximately20compounds)Severalofthevolatileorganic  compoundswereeliminatedfromconsiderationas_VOST_Ԁ_analytes_ l becausetheycouldnotbeanalyzedsuccessfullybygas X  chromatography/massspectrometry(GC/MS),andotherswere D! eliminatedbecauseofpooranalyticalsystemresponse.The 0"  remaining_CAAA_Ԁvolatileorganic_analytes_Ԁ(benzene,toluene,carbon #l! disulfide,2,2,4-_trimethylpentane_,andhexane)weretestedinthe $X" fieldusingtheguidanceofEPAMethod301forexperimentaldesign $D # andstatisticalevaluationofthedata.Quadruple_VOST_Ԁtrainswere %0!$ runinthefield,withdynamicspikingofthevolatile_analytes_ &"% fromacertifiedcylinderintotwoofthesamplingtrains.The '#& biasandprecisionofthe_VOST_Ԁsamplingandanalyticalmethodology (#' appliedtoeachofthevolatileorganic_analytes_Ԁwereevaluated. )$(