Publications by authors named "Wen-Po Xu"
Microscale Investigation into Selenium Distribution and Speciation in Se-Rich Soils from Enshi, China.
Bull Environ Contam Toxicol
January 2021
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.
Selenium (Se) speciation in soil is critically important for understanding the solubility, mobility, bioavailability, and toxicity of Se in the environment. In this study, Se fractionation and chemical speciation in agricultural soils from seleniferous areas were investigated using the elaborate sequential extraction and X-ray absorption near-edge structure (XANES) spectroscopy. The speciation results quantified by XANES technique generally agreed with those obtained by sequential extraction, and the combination of both approaches can reliably characterize Se speciation in soils.
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