PRECONCENTRATION OF RADIUM ISOTOPES IN SEA WATER USING MANGANESE IMPREGNATED ACRYLIC FIBER

Abstract

      Manganese-impregnated acrylic fiber produced at Dalat Nuclear Research Institute is able to adsorb radium isotopes in sea water with high efficiency. One gram of this fiber can collect 100% of radium in 8 liters of sea water and more than 96% of radium in 10 liters of sea water. This manganese-impregnated acrylic fiber has been used to concentrate 223Ra, 224Ra, 226Ra and 228Ra in sea water for further determination of radium isotopes which are tracers for studying resident time and diffusion coefficient of coastal water.