| 摘要 |
The invention concerns the confinement of caesium and/or rubidium, in particular 135Cs and 137Cs, in an apatite matrix of formula: Mt Cax Lny (PO4)6-u (SiO4)u X wherein: M represents the Cs and/or the Rb; Ln represents at least a trivalent cation; X represents at least an anion selected among 2F<->, S<2->, 2 Cl<->, 2Br<->, 2I<->, 2OH<-> and O<2->; and t, x, y and u are such that: 0 < t </= 2.5; 2 </= x </= 8; 1 </= y </= 7; 0 < u < 6; x + y + t = 10; and the total number of positive charges brought by the cations M, Ca and Ln is equal to (20 + u).
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