Diffusivity of Sr, I and Pu in Granite With Through-Diffusion Experiment

The diffusion behavior of Sr, I and Pu in granite was investigated by through-diffusion experiment. The effective diffusion coefficients of Sr, I and Pu in granite at 26℃ were determined to be (1.24±0.03)×10^-13m²/s, (2.88±0.02)×10^-13m²/s and (1.33±0.52)×10^-13m²/s, respectively. It is also observed that the speciation and species distribution of element have significant effects on its diffusion behavior.