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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
The disposal of high?level nuclear waste in deep geological formations poses major scientific and social challenges to be met in the next decades. Over geological time spans it cannot be excluded that groundwater will infiltrate into a waste repository. It needs to be considered that permeating groundwater corrodes waste canisters and mobilizes radionuclides from the waste. Demonstrating the repository safety requires a sound understanding of the migration and retention behavior of radionuclides in the geosphere. In this experimental study sorption reactions of neptunyl(V) with the mineral phase calcite have been investigated. The calcite surface is investigated by means of zetapotential and surface diffraction measurements. The surface adsorption of neptunyl(V) at calcite is investigated over a large range of Np concentrations and pH. Upon coprecipitation neptunyl(V) is readily incorporated into the calcite structure. The structures of an adsorption complex and the incorporation species are characterized by EXAFS spectroscopy. The reactivity of the calcite surface makes calcite a potentially important sink for neptunyl(V) in the geosphere.
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birth defects, or other reproductive harm.
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⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
