AI Article Synopsis
- This study examined how selenium (Se) is distributed and its chemical forms in selenium-rich soil using advanced techniques like μ-XANES spectroscopy and μ-XRF mapping.
- Results indicated that selenium is not evenly spread across the soil in seleniferous areas of Enshi, China, showing a heterogeneous distribution.
- The findings revealed that selenium mainly exists as Se(IV), organic Se(-II), or Se(0) in these soils, contributing to a better understanding of its behavior and effects in the environment.
Article 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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| http://dx.doi.org/10.1007/s00128-020-03090-7 | DOI Listing |
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