Abstract
Humic substances are present throughout the environment in soil and natural water. They are organic macromolecules with a variable structural formula, molecular weight, and a wide variety of functional groups depending on their origin. In natural waters, humic substances represent the main component of the “dissolved organic carbon” (DOC). The DOC may vary considerably from 1 mg/L at sea water surfaces to 50 mg/L at the surface in dark water swamps.1 There is strong evidence that all actinides form complexes with humic substances in natural waters.2 Therefore, humic substances can play an important role in the environmental migration of radionuclides by enhancing their transport. Retardation through humic substance interaction may be also possible due to formation of precipitating agglomerates. For remediation and restoration of contaminated environmental sites and risk assessment of future nuclear waste repositories, it is important to improve the predictive capabilities for radionuclide migration through a better understanding of the interaction of radionuclides with humic substances.
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Reich, T. et al. (1996). Characterization of the Interaction of Uranyl Ions with Humic Acids by X-Ray Absorption Spectroscopy. In: D’Amico, K.L., Terminello, L.J., Shuh, D.K. (eds) Synchrotron Radiation Techniques in Industrial, Chemical, and Materials Science. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5837-8_15
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DOI: https://doi.org/10.1007/978-1-4615-5837-8_15
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