Composite inorganic-organic ion exchangers, their application to the monitoring of radioactive water contamination and to the purification of radioactive waste waters

Composite ion exchangers containing polyacrylonitrile and one of the following inorganic constituents were tested: BaSO4 activated with Ca, ammonium salt of trihydrogenphosphato-dodecamolybdic acid, nickel-potassium double hexacyanoferrates(II), hydrated TiO2, hydrated MnO2, MgO, sodium titanate, synthetic M315 mordenite, synthetic Na-Y zeolite, and clinoptilolite. Preconcentration of radiocesium, radiocobalt, and radium was examined for the purposes of water contamination monitoring, and removal of 137Cs and 90Sr from long-term fuel storage pool water and of 226Ra from brine eluates was investigated as a means of purification of liquid radioactive wastes. The experiments and results are described. (P.A.). 35 refs