Abstract
In this study, we investigated the distribution and chemical speciation of Se in Se-rich soil by using micro-focused X-ray absorption near-edge structure (μ-XANES) spectroscopy coupling with X-ray fluorescence (μ-XRF) mapping. The microscale distribution showed that Se is heterogeneously distributed in the soil from seleniferous areas in Enshi, China. Se K-edge μ-XANES analysis suggested that Se is mainly present as Se(IV), organic Se(-II) or Se(0) species in Se-rich agricultural soil. The findings from this study would help improve the understanding of the fate, mobility, bioavailability, and biogeochemical cycling of Se in the seleniferous soil environment.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos. U1732132, 41303099, U1612441) and JSPS KAKENHI (No. 20K15204). This study was performed with the approval of Photon Factory (Nos. 2018G575 and 2018G089).
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Qin, HB., Zhu, JM., Tan, D. et al. Microscale Investigation into Selenium Distribution and Speciation in Se‐Rich Soils from Enshi, China. Bull Environ Contam Toxicol 106, 40–43 (2021). https://doi.org/10.1007/s00128-020-03090-7
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DOI: https://doi.org/10.1007/s00128-020-03090-7