简介：ThesorptionbehaviorofN-methyl-2-thio-imidazoleresin(MTIR)forRh(Ⅲ）wasinvestigated.TheoptmumsorptionconditionofMTIRforRh(Ⅲ）,sorptionratet1/2=84min,sorptioncapacity1.37mmolRh(Ⅲ）/gMTIR,[140.5mgRh(Ⅲ）/gMTIR],sorptionmolarratio0.34Rh(Ⅲ）/functionalgroup,distributioncoefficientD=2.5×10^3mg·g^-1weredetermined.ThesorptionselectivityofMTIRforRh(Ⅲ）inthepresenceofcommonmetalions,Fe^3+,Co^2+,Ni^2+andCu^2+wasexamined.Rh(Ⅲ）adsorbedonMTIRcanbeelutedquantitativelybyusingamixedsolutioncomposedof20%thio-urea-acetone:6molHCl.dm^-3(1:1vol.)usedasaneluent.Rh(Ⅲ）canbeseparatedfromthemixtureofRh(Ⅲ）andFe^3+,Co^2+,Ni^2+,Cu^2+byusingD72resinandMTIRsuccessively.
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