Neptunium thermodynamic parameters

Thermodynamic parameters for the hydrolysis species of neptunium(IV) and its oxide phases can be determined from the stability and solubility constants accepted in the present review together with the thermodynamic data for neptunium metal and Np selected by Guillaumont et al. (2003). These latter data are the same values that were selected earlier by Grenthe et al. (1992). The obtained thermodynamic values are listed in Table 9.10. 

Thermodynamic Parameters The thermodynamic values derived for neptunium (V) phases and hydrolysis species are listed in Table 9.12. Also given in the table are values for the thermodynamic parameters of Np02 , as listed by Guillaumont et al. (2003). These are the same values as chosen earlier by Lemire... 

Neck, V., Fanghanel, T., Rudolph, G., Kim, J. I., Thermodynamics of neptunium(V) in concentrated salt solutions Chloride complexation and ion interaction (Pitzer) parameters for the Np02 ion, Radiochim. Acta, 69, (1995), 39-47. Cited on page 104. 

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