TOC紫外光谱法

Proceedingsofthe5'WorldCongressonIntelligentControlandAutomation,June15-19,2004,Hangzhou,P.R.ChinaANewMulti-wavelengthAnalysisMethodforEstimationofTotalOrganicCarboninUrbanWastewaterUsingUVNisSpectrometryXiaoliWu,TiejunWuNationalLaboratoryofIndustrialControlTechnology&InstituteofIntelligentSystemsandDecisionMaking,ZhejiangUniversity,Hangzhou,310027,P.R.China(E-mail:[e-mail],edu.cn,[e-mail])Abstract-Totalorganiccarbon(TOC)isanimportantparametertoevaluatetheorganicpollutionofwater.AnovelmethodtorapidlydetectTOCofwastewaterwithUVNisspectroanalysisispresentedinthispaper.UVNisabsorptionspectraintherangeof250-450nmwereutilisedforregressionandprediction.Multi-wavelengthregressionprocedurewasdiscussed,andBoostingmethodwasusedtoimprovetheaccuracyofprediction.Experimentsshowthatbetterpredictionresultcanbegainedbythisadaptivemethodthanbythetraditionalregressionalgorithms,suchasPLS,non-linearPLSandRBFneuralnetwork.Meanwhile,theimprovedregressionmodelshowsagoodcorrelationbetweentheestimatedTOCvaluesandthechemicalanalysisvalues.Keywords-TOC,urbanwastewater,UVNisspectrum,BoostingE%863(Em?:2002AA412010)33620-7803-8273-0/04/$20.0002004IEEE3363-*#ATCC=55.rMgAC?XQBTOc=31.5mgllC...(...lk@CTOC=13.4mgllCiI900350400450&E(nm)no1/e50-BE4020.io-..e50-BE4020.io-..3364100,1[5187k%!&#Ek‘?&?%.C%hR#GR!31%5%.GB8978-1996.R.A.Dobbs,R.H.WiseandR.B.Dean,“Theuseofultra-violetabsorbanceformonitoringthetotalorganiccarboncontentofwaterandwastewater,”warerResearchPe?pgamonPre.w,Vol.6,pp.1173-1180,1972.B.MacCraith,K.T.V.Grattan,D.Connolly,R.Briggs,W.J.0.BoyleandM.Avis,“Resultsofacross-comparisonstudy:opticalmonitoringoftotalorganic-carbon(TOC)ofalimitedrangeofsamples,’’SensorsandAcruarors[BJ.vol.22,pp.149.153,1994.B.Deflandre,J.-P.Gagne.“Estimationofdissolvedorganiccarbon(DOC)concentrationsinnanolitersamplesusingUVspectroscopy,”WarerResearch.Vol.35,No.13,pp.3057-3062,2001.[6][7][SI[9].GLangergraber,N.FleischmannandF.Hofstadter.“AmutivanatecalibrationprocedureforUVNisSpectrometricQuantificationofOrganicMatterandNitrateinWastewater,”WarerResearch,Vol.47,No.2,pp.63-71,2003.[IO]A.Krogh,P.Sollich,“Statisticalmechanicsofensemblelearning,”PhysicalReview[EJ,vol.55,no.1,pp.811-825,1997.[II]Y.FreundandR.E.Schapire,“Adecision-theoreticgeneralizationofon-linelearningandanapplicationtoboosting,”InProc.oftheSecondEuropeanConferenceonComputationalLearningTheory,1995.[I21Y,FreundandR.E.Schapire,“AShortIntroductiontoBoosting,”JournalofJapaneseSocievforArrifcialIntelligence,vol.14,no.5,pp.771-780,1999.[I31R.E.Schapire,“TheoreticalViewsofBoostingandApplications,”ProceedingsofAlgorirhmicLearningTheov,1999:3365