Sorption of 131 I ! and 131 IO 3 ! from aqueous solutions on porous inorganic sorbents modified with d elements is studied at 25oC. The sorbents modified with Ag, Zn, Ni, Cu, and Co ammoniates are characterized by low distribution coefficients of 131 I ! and 131 IO 3 ! (K d <150 ml g !1 at V/m = 1000). Calcination of the sorbents modified with Ag, Cu, and Zn ammoniates at a temperature above 250oC affects the chemical state of the metals in the sorbent matrix, which is accompanied by slight increase in K d of 131 I ! and 131 IO 3 ! as compared to as-prepared samples. With the g-Al 2 O 3 -based sorbents modified with Ni or Cu, K d of 131 I ! and 131 IO 3! is well comparable with that for the Ag-modified sorbents based on MSKG silica gel.
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