Speciation and fate of toxic cadmium in contaminated paddy soils and rice using XANES/EXAFS spectroscopy.
作者： Sikhumbuzo Charles Kunene , Kuen-Song Lin , Ndumiso Vukile Mdlovu , You-Sheng Lin , Ncobile Bagezile Mdlovu
DOI: 10.1016/J.JHAZMAT.2020.124879
关键词:
摘要: The present study was conducted to determine the Cd distribution and speciation in contaminated paddy soils and rice kernels using XANES/EXAFS spectroscopy. The morphology and crystallization of rice and soils were investigated using FE-SEM and XRD techniques. The EXAFS spectra of Cd in soil and rice kernels showed that cadmium oxides (CdO) in soil and rice kernels formed Cd clusters with Cd–O bond distances of 2.35 Å and 2.83 Å (coordination numbers of 2.3 and 4.2), respectively. The XRD patterns show that …
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