Three filtration mechanisms of iodine adsorber,namely physical adsorption,chemisorption and displacement reaction,were introduced.The two tracers of non-radioactive methyl iodine CH3 127I and radioactive methyl iodine CH3 131I are consistent in physical and chemical properties,but there are subtle differences in adsorption mechanism.Experiments are designed to explore the effect of CH3 127I on the efficiency of iodine adsorbers and the feasibility of conducting regular efficiency experiments of iodine adsorbers in nuclear power plants.Combining the advantages of CH3127I correlation detection method and photoelectric method,the next research direction is determined.
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