Incorporation of iodates into hydroxyapatites: a new approach for the confinement of radioactive iodine

Lionel Campayo (1) , Agnès Grandjean (2) , Antoine Coulon (1) , Rémy Delorme (1) , Delphine Vantelon (3) , Danielle Laurencin (4)

1 LM2C - Laboratoire d'études de Matériaux Céramiques pour le Conditionnement
2 ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
3 SSOLEIL - Synchrotron SOLEIL
4 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier

A new strategy for the confinement of iodine has been developed: it consists in incorporating iodate anions (IO3-) into hydroxyapatite (Ca10(PO4)6(OH)2, HA). The iodate-substituted HA was synthesized by precipitation, and characterized in detail. Its thermal stability and resistance to leaching were then evaluated, revealing promising properties in view of radioactive iodine confinement applications.

Mots clés: iodate; hydroxyapatite; 129I; confinement; I K-edge XANES

Domaines: Chimie inorganique

Lionel Campayo, Agnès Grandjean, Antoine Coulon, Rémy Delorme, Delphine Vantelon, et al.. Incorporation of iodates into hydroxyapatites: a new approach for the confinement of radioactive iodine. Journal of Materials Chemistry, 2011, 21, pp.17609-17611. ⟨10.1039/c1jm14157k⟩. ⟨hal-00638532⟩