The selective separation of the iodine by means of an ether - ring and its use for the determination of 129i in the aqueous solutions.

摘要

The invention relates to a process for the selective separation of the iodine by means of a crown ether -. & br / according to this process, it extracts the iodine of an aqueous solution by the dicyclohexyl - 18 - ring - 6 (dc18c6) diluted in bo tetrachloroethane, after having added to the solution, a reducing agent, k + ions and pd (ii). br / the selectivity is high. It is therefore possible to use this process for the determination of the iodine 129 in aqueous solutions originating from reprocessing of spent nuclear fuels.