A review on distribution coefficient (K_d) of some selected radionuclides in soil/sediment over the last three decades

This review paper presents the different methods to estimate K_d and subsequent compiles of the K_d data on U, Ra, Th, ¹³⁷Cs and ⁶⁰Co in soil/sediment under various aquatic medium based on the extensive literature survey over the last 3-decades (1990-2019). The estimated K_d values show a very wide range and make more difficult to derive generic value. The finding suggests that K_d values are to be estimated for site-specific conditions while assessing the radionuclide transport modeling and risk analysis around the nuclear facilities. Review includes research papers, reports, reviewed papers, dissertations, published compilations and other technical documents. (author)