... LLC 88 Radionuclide Concentrations in Food and the Environment from the few works existing in the literature. With the exception of the samplestaken from 1957 to 1960, concentrations of 36Cl and ... advection, weathering, decay, α-recoil, and sorption/desorption at the water-rock interface, describing the evolution of con-centrations of several 232Th and 2 38 U radionuclides along the flow ... km. The separation line isimaginary, but it is true that the major part of the atmosphere resides in the troposphere, and the relevant processes and changes governing the weather takeplace in...