Abstract
The concentrations of plutonium and thorium in a group of freshwater lakes having a wide variety of limnological characteristics have been reported previously. The concentrations of uranium, the Pu(VI)-to-Pu(IV) concentration ratios in these waters, and the concentrations of plutonium, thorium, and uranium in suspended sediment, were determined and are tabulated. The small differences between some of the values in this table and those reported previously are the result of a change in the method used to calculate concentrations from the data obtained in alpha spectrometric assays. At present strong correlations between the plutonium, thorium, or uranium concentrations and the limnological parameters, pH and alkalinity, appear to exist. A series of laboratory experiments are in progress to determine whether the systematic trends suggested by the field data can be duplicated using Pu tracers in known oxidation states and various amorphous oxide substrates.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
