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Field study of the migration of 237Np, 238Pu and 241Am in a weak loess aquifer

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Abstract

The migration of 237Np, 238Pu and 241Am in a weak loess aquifer was investigated in-situ in an Underground Research Facility. Quartz containing 237Np, 238Pu, 241Am and 3H was introduced into the aquifer with a stainless steel tube. The local water flow in the aquifer was monitored using a 3-dimensional sampling system. The contaminated area of the aquifer was obtained wholly with the help of a pre-installed stainless steel frame and cut into small pieces (samples) 3-dimensionally and analyzed. 3H in the water samples was determined with a liquid scintillation analyzer (Tri-Camb 2250). Radioactivity of 237Np and 241Am in the soil samples were determined with a low energy photon detector (HPGe), 238Pu was analyzed with a low background α&β detector after chemical separation. The result of the 3-year experiment indicated that 237Np, 238Pu and 241Am were strongly absorbed by the loess aquifer. The retardation factor of 237Np in the loess aquifer was 1.54.104.

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Authors and Affiliations

  1. Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China

    C. L. Liu

  2. China Institute for Radiation Protection, P.O. Box 120, Taiyuan, Shanxi, 030006, P.R. China

    Z. M. Wang, S. S. Li, Y. E. Yang, B. Li, H. Jiang, L. Jiang, L. Wang & D. Li

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  1. C. L. Liu
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  2. Z. M. Wang
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  3. S. S. Li
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  4. Y. E. Yang
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  5. B. Li
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  6. H. Jiang
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  7. L. Jiang
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  8. L. Wang
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  9. D. Li
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Liu, C.L., Wang, Z.M., Li, S.S. et al. Field study of the migration of 237Np, 238Pu and 241Am in a weak loess aquifer. Journal of Radioanalytical and Nuclear Chemistry 260, 193–197 (2004). https://doi.org/10.1023/B:JRNC.0000027080.34007.8b

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  • DOI: https://doi.org/10.1023/B:JRNC.0000027080.34007.8b

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