Microscale Investigation into Selenium Distribution and Speciation in Se‐Rich Soils from Enshi, China,Bulletin of Environmental Contamination and Toxicology

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Microscale Investigation into Selenium Distribution and Speciation in Se‐Rich Soils from Enshi, China
Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2021-01-16 , DOI: 10.1007/s00128-020-03090-7
Hai-Bo Qin , Jian-Ming Zhu , Decan Tan , Wen-Po Xu , Dong-Xu Liang , Yoshio Takahashi

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.

更新日期：2021-01-18

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