Abstract:
COMPLEXINGREACTIONSOFDTPAWITHURANIUM,NEPTUNIUMANDPLUTONIUMⅠ.DETERMINATIONOFSTABILITYCONSTANTSOFDTPA-Np(Ⅳ)COMPLEXWuQiulin(InstituteofNuclearEnergyTechnology,TsinghuaUniversity,Beijing102201)ChenShumingLiGuanghong(BeijingInstituteofNuclearEngineering,Beijing100840)ABSTRACTThestabilityconstantsofNp(Ⅳ)complexwithdiethylenetriaminepentaaceticacid(DT-PA)aredeterminedbysolventextractionmethod.ThestabilityconstantsofNp(Ⅳ)complexwithDTPAinsolutionsofvariousacidconcentrations,diferentextractants,diferentcon-centrationsofDTPAanddiferentconcentrationsofuraniumandothermetal-ionsaredeter-mined.Thevaluesoflgβrangefrom29.55to29.75,whichconformtotheliteraturevalues.KeywordsDietylenetriaminepentaaceticacid(DTPA)Np(Ⅳ)ComplexStabili-tyconstant