Thermodynamic data of carbonate complexes of actinides

The validity of the thermodynamic data is discussed for the carbonate complexes of actinides. The experimental values of the stability constants are often scattered and different speciations are sometimes observed under similar experimental conditions. For the improvements, more accurate measurements are required under well-defined experimental conditions. Also, theoretical models may be helpful for checking the experimental data and for predicting the unknown data. The application of a simple hard sphere model is described. (author)