Abstract
Extended X-ray absorption fine structure (EXAFS) spectroscopic investigation and sequential extraction were utilized to characterize the adsorption form of Cs in soil. The experimental results show that Cs+ mainly adsorbs on the surface of soil samples S1 and S2, which is a type of weak adsorption. Results of sequential extraction experiments can be directly explained with EXAFS spectra of the samples. The chemical index of weathering (CIW) of the soil has a decisive impact on the adsorption form of Cs+. The research results can provide strong support for the study of the adsorption and blocking behavior of cesium ions by the I/S mixed layer structure in soil.
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Acknowledgements
This work was supported by National Key Research and Development Program of China (2018YFC1801105), and State Key Laboratory of NBC Protection for Civilian (SKLNBC2019-01, SKLNBC2020-09).
Funding
State Key Laboratory of NBC Protection for Civilian,SKLNBC2020-09, Wenzhuo Chen, SKLNBC2019-01, Zhanguo Li, National Key Research and Development Program of China, 2018YFC1801105, Zhanguo Li.
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Zhang, K., Chen, W., Lu, M. et al. Adsorption forms of cesium in specific soils based on EXAFS spectroscopic investigations and sequential extraction experiments. J Radioanal Nucl Chem 332, 527–538 (2023). https://doi.org/10.1007/s10967-023-08793-9
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DOI: https://doi.org/10.1007/s10967-023-08793-9