MC-ICP-MS analysis of non-natural U isotope ratios using a 229Th/232Th external mass bias correction
Abstract
Civil and military uses of uranium lead to the possibility that U exists in the environment with non-natural isotope ratios. Therefore, characterisation of environmental U cannot rely on prior knowledge of any particular isotope ratio. For example, it is common to use the natural 235U/238U ratio to quantify mass bias effects in