Abstract: In this paper, a composite column containing silver potassium ferric cobaltate and manganese dioxide was prepared for the enrichment of key radionuclides from liquid effluents of nuclear power plants. The effects of sample type, flow rate, pH, temperature and other factors on the enrichment efficiency of the column were studied experimentally. The method can achieve rapid enrichment of key artificial radionuclides in environmental water samples and liquid effluents of nuclear power plants. The adsorption efficiency can reach more than 90%. This method can effectively reduce the detection limit of γ nuclides in liquid effluents, shorten the enrichment time of environmental water samples, and can be used for environmental water samples monitoring in emergency situations.

Key words: liquid effluents from nuclear power plants, environmental water samples, enrichment materials, artificial gamma nuclides, emergency monitoring