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1、FreseniusJAnalChem(1995)352:166-173Fresenius'Journalof©Springer-Verlag1995CertificationofStandardReferenceMaterial(SRM)1941a,OrganicsinMarineSedimentMicheleM.Schantz1,BruceA.Benner,Jr.1,MelindaJ.Hays1,W.RobertKelly2,RobertD.Vocke,Jr.2,RabiaDemiralp2,
2、RobertR.Greenberg2,SusannahB.Schiller3,GunnarG.Lauenstein4,StephenA.Wise11OrganicAnalyticalResearchDivision,NationalInstituteofStandardsandTechnology,Gaithersburg,MD20899,USA2InorganicAnalyticalResearchDivision,NationalInstituteofStandardsandTechnolo
3、gy,Gaithersburg,MD20899,USA3StatisticalEngineeringDivision,NationalInstituteofStandardsandTechnology,Gaithersburg,MD20899,USA4CoastalMonitoringandBioeffectsAssessmentDivision,NationalOceanService,NationalOceanicandAtmosphericAdministration,SilverSpri
4、ng,MD20910,USAReceived:2August1994/Revised:10October1994/Accepted:20October1994Abstract.SRM1941a,OrganicsinMarineSediment,hasForthefirstgoalsufficientmaterialwascollectedandbeenrecentlyissuedwithcertifiedconcentrationsfor23processedtoprovideapproxima
5、tely1000bottlesofSRMpolycyclicaromatichydrocarbons,21polychlorinated1941a,whichismorethantwicethequantityofSRMbiphenylcongeners,6chlorinatedpesticides,andsulfur.1941produced.ToachievethesecondgoalofincreasingNoncertifiedconcentrationshavebeenalsorepo
6、rtedforthenumberofPAHswithcertifiedconcentrations,fouradditionalPAHs,PCBcongeners,andchlorinatedpesti-differentanalyticalapproacheswereimplementedtopro-cidesandforpercenttotalorganiccarbon(TOC),aliphaticvidemeasurementsforalargernumberofPAHs:(1)re-hy
7、drocarbons,andtraceelements.SRM1941aisthemostversed-phaseLCwithfluorescencedetection(LC-FL)extensivelycharacterizednaturalmatrixSRMissuedbyanalysisofthetotalPAHfraction,(2)reversed-phaseLC-theNationalInstituteofStandardsandTechnology(NIST).FLanalysis
8、ofisomericPAHfractionsisolatedbynor-real-phaseLC(i.e.,multidimensionalLC),(3)GC-MSanalysisofthePAHfractionona5%phenyl-substitutedmethylpolysiloxanestationaryphase(thetypicalGCsta-1IntroductiontionaryphaseusedforPAHanalyses),and(4)GC-MSofthePAHfractio