Abstract
The solubility of NpO2OH(am) was measured in NaCl solutions ranging from 0.30 to 5.6 molal at room temperature (∼21 ±2°C). Experiments were conducted from undersaturation and allowed to equilibrate in a CO2-free environment for 37 days. The apparent solubility products varied with NaCl concentration and were between 10 9 and 10 8 mol2 · L 2. Using the specific ion interaction theory (SIT), the log of the solubility product of NpO2OH(am) at infinite dilution was found to be -8.79 ±0.12. The interaction coefficient, ε(NpO2+-Cl ), was found to be (0.08±0.05).
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Roberts, K. E., Silber, H. B., Torretto, P. C., Prussin, T., Becraft, K., Hobart, D. E., & Novak, C. F. (1996). The Experimental Determination of the Solubility Product for NpO2OH in NaCl Solutions. Radiochimica Acta, 74, 27–30. https://doi.org/10.1524/ract.1996.74.special-issue.27
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