1-s2.0-S0003267011011676-main

1-s2.0-S0003267011011676-mainAnalyticaChimicaActa706(2011)261–267ContentslistsavailableatSciVerseScienceDirectAnalyticaChimicaActajournalhomepage:www.elsevier.com/locate/acaInfluenceofacidificationontheopticalpropertiesandmolecularcompositionofdissolvedorganicmatterMalakM.Tfailya,DavidC.Podgorskia,JaneE.Corbettb,JeffreyP.Chantonb,WilliamT.Coopera,∗aDepartmentofChemistry&Biochemistry,FloridaStateUniversity,Tallahassee,FL32306-4390,USAbDepartmentofOceanography,FloridaStateUniversity,Tallahassee,FL32306-4320,USAarticleinfoArticlehistory:Received26May2011Receivedinrevisedform22August2011Accepted24August2011Availableonline31August2011Keywords:Dissolvedorganicmatter(DOM)SamplepreservationOpticalpropertiesMolecularcompositionUltrahighresolutionmassspectrometryofDOMUV–visspectroscopyExcitation–emissionmatrixfluorescencespectroscopyabstractAcidificationisacommonmethodforpreservingdissolvedorganicmatter(DOM)innaturalwatersam-plesuntilsophisticatedlaboratoryanalysescanbeperformed.However,littleis