Nica-Donna模型

Nica-Donna模型MetalIonBindingbyHumicAcid:ApplicationoftheNICA-DonnanModelDAVIDG.KINNIBURGH,*,†,‡CHRISTOPHERJ.MILNE,§MARCF.BENEDETTI,|JOSEP.PINHEIRO,⊥JEROENFILIUS,†LUUKK.KOOPAL,4ANDWILLEMH.VANRIEMSDIJK*,†DepartmentofSoilScienceandPlantNutritionandDepartmentofPhysicalandColloidChemistry,WageningenAgriculturalUniversity,Dreijenplein10,6703HBWageningen,TheNetherlands,BritishGeologicalSurvey,Wallingford,Oxon,OX108BB,U.K.,LaboratoiredeGe´ochimieetMe´talloge´nie,Universite´P&MCurie,4PlaceJussieu,75252ParisCedex05,France,andUniverAlgarveUnidadedeCienciasExactaseHumana,CampusdeGambelas,8000Faro,PortugalADonnan-typemodelfornonspecificbindingofelectrolyteionshasbeencombinedwiththenon-idealcompetitiveadsorption(NICA)modelforspecificbindingtoproduceamodelforionbindingtohumicsubstances.Themodelconsiderssiteheterogeneity,non-ideality,multicomponentcompetition,andelectrostaticinteractions.TheNICA-DonnanmodelwasfittedtodataforH,Ca,Cd,Cu,andPbbindingbyapurifiedpeathumicacid.Themodelfitsweregoodandcovereda