Abstract
The publication describes chelation studies of cerium(III) with 1,2-bis(β-aminoethoxy)-ethane N,N,N′,N′-sodium sulfonate triacetic acid (ASTA). The results showed the effectiveness of ASTA as a chelating agent by molar ratio, continuous variation and slope ratio methods. Stable 1∶1 complex was formed at pH from 4 to 8. Aqueous solutions of the chelate of different mole ratios at pH and 7.5 were irradiated by γ-radiation with different doses. The results show that a decrease of absorbance with increasing absorbed dose was obtained in the dose range studied. A proposed radiolytic mechanism is discussed. The degradation of ligand was due to OH radical.
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