In situ experiments on matrix diffusion in fractured crystalline rock
Migration of contaminants from a fracture into a granitic rock matrix is studied on a unique selection of rock samples using β/γ-autoradiography, γ-spectrometry and LA-ICP-MS. The rock material originates from an in situ dipole experiment where a cocktail of different radionuclides was injected into a shear zone. The resulting concentration profiles of 137Cs, 235U and 237Np in the rock matrix indicate that these nuclides migrated from the fracture at least 1 cm into the granitic matrix over the experimental time scales of 60 days to 3 years.
A.M(o)ri M.Mazurek Q.Hu
Rock-Water Interaction Group, Institute of Geological Sciences, University of Bern, Switzerland Environmental Radiochemistry Group, Lawrence Livermore National Laboratories, USA
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
357-360
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）