Microcalorimetric Determination of the Enthalpy of Formation of the Complex Ions of Trivalent Plutonium, Americium and Lanthanium with EDTA
As to date, quantitative data on actinide complex species are very scarce and, when existing often limited to stability constants determinations. No direct calorimetric measurement of the enthalpy of complexing have sofar been published for those elements. The present communication deals with such measurements for the complexing of Pu3+ and Am3+ with EDTA. We also report data on La3+ complexing for comparison purpose. From the enthalpy change and knowing the stability constants of the chelates, the entropy variation ori complexing can easily be calculated.
KeywordsStability Constant Enthalpy Change Entropy Variation Lanthanide Series Transuranium Element
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