Journal of Nuclear Fuel Cycle and Waste Technology

An experiment for measuring the concentration ratios of 137Cs and 85Sr for fish as an index aquatic animal was performed. The studied species was Chinese minnow (Rhynchocypris Oxycephalus), a Korean native freshwater species. Chinese minnows were reared in acryl aquariums which were 45 cm wide, 85 cm long and 50 cm high. Water in the aquariums was successively purified using filtering devices attached on the floors and the walls. Fish powder in a particulate form was supplied twice a day for feeding. After a radioactive solution was added to make the initial water concentrations approximately 0.02μCi/l and 0.1μCi/l for 137Cs and 85Sr, respectively, fish and water were sampled 10 times for a month. The concentration ratios were measured to be 0.348lkg-1 ~ 13.906lkg-1 for 137Cs and 0.474lkg-1 ~ 13.089lkg-1 for 85Sr.

Keywords

137Cs,85Sr,Concentration Ratio,Aquatic Animal,Radionuclides,137Cs,85Sr