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Updated: Mar 15, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
Published on: May 20, 2019
Separation of thorium and uranium in nitric acid solution using silica based anion exchange resin
Yanliang Chen1, Yuezhou Wei1, Linfeng He2
1School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Abstract:
To separate thorium and uranium in nitric acid solution using anion exchange process, a strong base silica-based anion exchange resin (SiPyR-N4) was synthesized. Batch experiments were conducted and the separation factor of thorium and uranium in 9M nitric acid was about 10. Ion exchange chromatography was applied to separate thorium and uranium in different ratios. Uranium could be eluted by 9M nitric acid and thorium was eluted by 0.1M nitric acid. It was proved that thorium and uranium can be separated and recovered successfully by this method.
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