HNO₃ extractability, distribution of macrocycle and radiation stability of strontium-selective extractant based on the dicyclohexano-18-crown-6 solution in 1,1,7-trihydrododecafluoroheptanol

1,1,7-Trihydrododecafluoroheptanol is a promising solvent for the development of strontium-selective extractants based on individual stereoisomers of dicyclohexano-18-crown-6 (DCH18C6). In this study the distribution of DCH18C6 between organic and aqueous phases was determined and the effect of macrocycle stereoisomerism was revealed. Extractability of nitric acid depended on the acidity of initial aqueous phase and did not on DCH18C6 stereoisomerism. Based on the structure of radiolytic intermediates, the main channels of radiation destruction of the macrocycle and the solvent were proposed. The obtained data highlights the potentiality of the DCH18C6/1,1,7-trihydrododecafluoroheptanol for designing a technological process for the selective strontium extraction.