差分光谱与DBPs生成之间的联系

差分光谱与DBPs生成之间的联系WaterResearch36(2002)3273–3282CorrelationsbetweendifferentialabsorbanceandtheformationofindividualDBPsGregoryV.Korshin,WellsW.Wu,MarkM.Benjamin*,OanaHemingwayDepartmentofCivilandEnvironmentalEngineering,UniversityofWashington,Box352700,Seattle,WA98195-2700,USAReceived1August2001;receivedinrevisedform1December2001AbstractThisstudyexaminedcorrelationsbetweenthedifferentialabsorbanceat272nm(DA272)andtheformationofdisinfectionby-products(DBPs)inchlorinatedwaterfromtheToltRiver,awatersourceforSeattle,WA.TheDBPsinvestigatedincludedchloroform(CHCl3),dichlorobromomethane(CHCl2Br),mono-,di-andtrichloroaceticacids(MCAA,DCAA,andTCAA,respectively),chloralhydrate(CH),dichloroacetonitrile(DCAN)and1,1,1-trichloropropanone(TCP).WhereasthekineticsofDBPformationarecomplexandarenon-linear,thesameDBPdatarepresentedasafunctionofDA272arequitesimple.Absorbancedecreaseswhenthewaterischlorinated,i.e.,DA272isalwaysnegative.TheDBPvs.�DA272correlationscanalmostalwaysbequantifiedbylinearequations,a